INIS Repository Search - Results for the query - author:"Benyoussef, A."
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http://inis.iaea.org/Search/search.aspx?orig_q=RN:47005596
Traffic flow behavior at a single lane roundabout as compared to traffic circleLakouari, N.; Ez-Zahraouy, H.; Benyoussef, A., E-mail: ezahamid@fsr.ac.ma</br>In this paper, we propose a stochastic Cellular Automata (CA) model to study traffic flow at a single-lane urban roundabout (resp. traffic circle) of N entry points (resp. exit points), the entry points are controlled by rates α_1...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:33044609
Order-disorder layering transitions in a variable transverse fieldBahmad, L.; Benyoussef, A.; Ez-Zahraouy, H., E-mail: ezahamid@fsr.ac.ma</br>The effect of a variable surface transverse magnetic field Ω<sub>s</sub>, on the order-disorder layering transitions of an Ising spin-((1)/(2)) model is investigated using mean field theory (MF) and finite cluster approximation (FC)....
http://inis.iaea.org/Search/search.aspx?orig_q=RN:34015620
Order-disorder layering transitions of a spin-1 Ising model in a variable crystal fieldBahmad, L.; Benyoussef, A.; Ez-Zahraouy, H., E-mail: bahmad@fsr.ac.ma</br>The magnetic order-disorder layering transitions of a spin-1 Ising model are investigated, under the effect of a variable surface crystal field Δ<sub>s</sub>, using the mean-field theory. Each layer k, of the film formed with N layers,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:34036851
Magnetic superexchange and covalency parameters of Zn<sub>x</sub>Cd<sub>1-x</sub>Cr<sub>2</sub>Se<sub>4</sub>Mahjoubi, F.; Hamedoun, M.; Bakkali, F.Z.; Hourmatallah, A.; Benyoussef, A, E-mail: hamedoun@fesnet.net.ma</br>The cationic substitutions effects at different concentrations, within the Zn<sub>x</sub>Cd<sub>1-x</sub>Cr<sub>2</sub>Se<sub>4</sub> lattice (0.35≤x≤0.58), on the electronic transfer in chromium's ion are investigated. For this purpose,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:21032698
Finite cluster renormalization and new two step renormalization group for Ising modelBenyoussef, A. (Faculte des Sciences, Rabat (Morocco). Lab. de Magnetisme); El Kenz, A.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>New types of renormalization group theory using the generalized Callen identities are exploited in the study of the Ising model. Another type of two-step renormalization is proposed. Critical couplings and critical exponents y<sub>T</sub>...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:22086706
Finite cluster approximation study of frustration in the semi-infinite Ising modelBenyoussef, A. (Laboratoire de Magnetisme, Rabat (Morocco). Faculte des Sciences); El Kenz, A.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The influence of frustration on the phase transitions of a semi-infinite three-dimensional Ising model is investigated. Temperature-concentration phase diagrams for fixed values of the ratio of surface and bulk interactions can exhibit...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:19052632
The dilute random field Ising model by finite cluster approximationBenyoussef, A. (Laboratoire de Magnetisme, Dept. de Physique, Faculte des Sciences, Rabat (Morocco)); Saber, M.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>Using the finite cluster approximation, phase diagrams of bond and site diluted three-dimensional simple cubic Ising models with a random field have been determined. The resulting phase diagrams have the same general features for...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:25001309
Magnetic properties of a transverse spin-1 Ising model with longitudinal crystal field interactionsBenyoussef, A. (Laboratoire de Magnetisme et Physique des Haute Energies, Dept. of Physique, Rabat (Morocco)); Ez Zahraouy, H.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The three dimensional spin-1 Ising model with crystal field interactions exhibit tri-critical behaviour. Using an expansion technique for cluster identities of spin-1 localized spin systems, we study the influence of transverse magnetic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:25001308
Magnetic properties of a transverse spin-1 Ising model with random crystal field interactionsBenyoussef, A. (Laboratoire de Magnetisme et Physique des Haute Energies, Dept. of Physique, Rabat (Morocco)); Ez Zahraouy, H.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>We study the phase diagram and magnetic properties of a transverse spin-1 Ising model with random longitudinal crystal field interactions within an expansion technique for cluster identities of spin-1 localized spin systems. The partially...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51072608
Magnetic properties of checkerboard lattice: a Monte Carlo studyJabar, A.; Masrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, PB 63, 46000, Safi (Morocco)); Hamedoun, M.; Benyoussef, A. (Institute of Nanomaterials...</br>The magnetic properties of ferrimagnetic mixed-spin Ising model in the checkerboard lattice are studied using Monte Carlo simulations. The variation of total magnetization and magnetic susceptibility with the crystal field has been...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48032961
Ab-initio study of magnetism behavior in TiO_2 semiconductor with structural defectsZarhri, Z.; Houmad, M.; Ziat, Y.; El Rhazouani, O.; Slassi, A.; Benyoussef, A.; El Kenz, A., E-mail: z.zarhri@gmail.com</br>Magnetic, electronic and structural properties of titanium dioxide material with different structural defects are studied using the first-principles ab-initio calculations and the Korringa–Kohn–Rostoker method (KKR) combined with...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:25001306
Some results on the phase diagram of the antiferromagnetic Potts model in an external magnetic fieldBenyoussef, A. (Laboratoire de Magnetisme et Physique des Haute Energies, Dept. of Physique, Rabat (Morocco)); Ez Zahraouy, H.</br>International Centre for Theoretical Physics, Trieste (Italy)</br>Phase diagram of the q state antiferromagnetic Potts model on a square lattice is investigated in a neighborhood of the critical point h = 4, T = 0. Using a constructive criterion of uniqueness introduced by Dobrushin, Kolafa, and...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29024351
A simulation study of an asymmetric exclusion model with open and periodic boundariesBenyoussef, A.; Chakib, H.; Ez-Zahraouy, H. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Faculte des Sciences, Rabat (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>Using numerical simulations we study the effect of the jumping rate on the density, current and phase diagram in the open boundaries case, and on the velocities of particles in the case of one and two species of particles on a ring,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29058428
Spin-wave analysis of the XXZ Heisenberg model with Dzyaloshinskii-Moriya interactionBenyoussef, A.; Boubekri, A.; Ez-Zahraouy, H. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Dept. de Physique, Faculte des Sciences, Rabat (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of the Dzyaloshinskii-Moriya interaction on the stability of the Neel phase and the energy gap for the XXZ Heisenberg model on a d-dimensional hypercubic lattice is investigated using the linear spin-wave theory. In one-dimension,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:26014022
Ferromagnetic Potts model in a magnetic field: Finite lattice extrapolation of the (1+1)-dimensional HamiltonianBassir, A. (International Centre for Theoretical Physics, Trieste (Italy)); Benyoussef, A. (Laboratoire de Magnetisme et Physique des Hautes Energies, Rabat (Morocco). Dept. de Physique)</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The (1+1)-dimensional Hamiltonian q-state ferromagnetic Potts model in an external magnetic field H is studied using finite lattice extrapolation techniques. The possible phases and their boundaries are determined from the ground...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29065690
Phase diagram of a diluted surface of a disordered Ising filmBengrine, M.; Benyoussef, A.; Ez-Zahraouy, H.; Mhirech, F. (Lab. de Magnetisme et de Physique des Hautes Energies, Dept. de Physique, Faculte des Sciences, Rabat (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>The effects of amorphized film and diluted surface on phase diagrams and magnetic properties of a spin-1/2 Ising film are investigated within a finite cluster approximation. Depending on the value of the concentration p of the dilution...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29065682
An effective field study of the magnetic properties and critical behaviour at the surface Ising filmBengrine, M.; Benyoussef, A.; Ez-Zahraouy, H.; Mhirech, F. (Lab. de Magnetisme et de Physique des Hautes Energies, Dept. de Physique, Faculte des Sciences, Rabat (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>The influence of corrugation and disorder at the surface on the critical behaviour of a ferromagnetic spin-1/2 Ising film is investigated using mean-field theory and finite cluster approximation. It is found that the critical surface...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:28022278
A mean field study of the quasi-one-dimensional antiferromagnetic anisotropic Heisenberg modelBenyoussef, A. (Faculte des Sciences, Rabat (Morocco). Lab. de Magnetisme et de Physique des Hautes Energies); Boubekri, A.; Ez-Zahraouy, H. (International Centre for Theoretical Physics, Trieste (Italy))</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of the chain and the dimer anisotropies on the ground state energy and the energy gap of the spin-1/2 quasi-one-dimensional antiferromagnetic Heisenberg model is investigated using a mean field theory. The dependence of...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50020270
Kinetic Phase Transition in the Semi-infinite Spin-1 Ising Model Under a Periodically Oscillating Magnetic FieldAhmed, S. Sidi; Nid-bahami, A.; El Hachimi, A. G.; Bahmad, L.; Benyoussef, A.; Kenz, A. El (Mohammed V University, LMPHE, Faculty of Sciences (Morocco)), E-mail: sidy220@gmail.com</br>The kinetics of the semi-infinite Ising model in the presence of a time-dependent oscillating external field is studied within the framework of the mean-field approach. We use the Glauber-type stochastic dynamics to describe the evolution...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:28022277
Odd number of coupled antiferromagnetic anisotropic Heisenberg chains: Spin wave theoryBenyoussef, A. (Faculte des Sciences, Rabat (Morocco). Lab. de Magnetisme et de Physique des Hautes Energies); Boubekri, A.; Ez-Zahraouy, H. (International Centre for Theoretical Physics, Trieste (Italy))</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of the chain and perpendicular anisotropies on the energy gap for odd number of coupled quantum spin-1/2 antiferromagnetic anisotropic Heisenberg chains is investigated using a spin wave theory. The energy gap opens above...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:30003840
Numerical study of the spin-1 Ashkin-Teller modelBekhechi, S.; Badehdah, M.; Benyoussef, A.; Ettaki, B. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Departement de Physique, Faculte des Sciences, Universite Mohammed V, Rabat (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>Two non perturbative methods by means of the Transfer-Matrix Finite-Size-Scaling (TMFSS) and Monte Carlo (MC) simulations are used to investigate the spin-1 Ashkin-Teller model (A.T.M.). We have obtained rich phase diagrams with first...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50017091
First-Principles Investigation of Magnetic Properties and Faraday Rotation of Co Doping CdTeRaiss, A. Ait; Sbai, Y.; Bahmad, L.; Benyoussef, A. (Mohammed V University, Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMcSI), Faculty of Sciences (Morocco)), E-mail: aitraiss.abderrahim@gmail.com</br>In this paper, we aimed to study the effect of doping of the compound CdTe with the cobalt impurity (Co), as well as the vacancy defects in Cd sites. On one hand, this leads to the investigation of the magnetic properties and the...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45013076
Multilayer transition in a spin-1 Blume—Capel model with RKKY interaction and quantum transverse anisotropyTahiri, N.; Ez-Zahraouy, H.; Benyoussef, A. (Computational Physics Group, LMPHE, Departement de Physique, Faculte des Sciences, Universite Mohammed V-Agdal, B.P. 1014, Rabat (Morocco)), E-mail: ezahamid@fsr.ac.ma</br>Using mean-field theory, we have studied the effect of quantum transverse anisotropies with RKKY interaction on the multi-layer transition and magnetic properties of the spin-1 Blume—Capel model of a system formed by two magnetic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:27069361
Phase diagrams of a spin-1/2 transverse Ising model with three-peak random field distributionBassir, A.; Bassir, C.E. (International Centre for Theoretical Physics, Trieste (Italy)); Benyoussef, A.; Ez-Zahraouy, H. (Faculte des Sciences, Rabat (Morocco). Lab. de Magnetisme et de Physique des Hautes Energies)</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of the transverse magnetic field on the phase diagrams structures of the Ising model in a random longitudinal magnetic field with a trimodal symmetric distribution is investigated within a finite cluster approximation....
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29062809
The semi-infinite anisotropic spin-1/2 Heisenberg ferromagnetBenyoussef, A.; Boubekri, A.; Ez-Zahraouy, H. (LMPHE, Dept. of Physics, Faculty of Sciences, University Mohammed V, Rabat (Morocco)); Saber, M. (Department of Physics, Faculty of Sciences, University of Moulay Ismail, Meknes (Morocco))</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>Using the effective field theory with a probability distribution technique that accounts for the self-spin correlation functions, the phase transitions in the semi-infinite anisotropic spin-1/2 Heisenberg ferromagnet on a simple cubic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:26039620
Exchange integrals and magnetic properties of mixed chromium spinel systems: Zn<sub>1-x</sub>A<sub>x</sub>Cr<sub>2</sub>X<sub>4</sub>(A = Cd, Hg and X = S, Se)Hamedoun, M.; Zerhouni, A.; Slimani, M. (Sidi Mohammed Ben Abdellah Univ., Fes (Morocco). Faculte des Sciences); Rachadi, A. (International Centre for Theoretical Physics, Trieste (Italy)); Benyoussef, A. (Universite Mohammed 5, Rabat...</br>International Centre for Theoretical Physics, Trieste (Italy)</br>Many magnetic measurements have been accomplished in order to improve the phase diagrams of the systems Zn<sub>1-x</sub> Cd Cr<sub>2</sub> S<sub>4</sub> and Zn<sub>1-x</sub>Cd<sub>x</sub>Cr<sub>2</sub>Se<sub>4</sub> particularly in...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50016805
Crystal Field Effects on Magnetic Properties of a Mixed Ferrimagnetic Ising System: a Monte Carlo StudyBahlagui, T.; Kenz, A. El (Mohammed V Agdal University, Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Department of Physics, Faculty of Sciences (Morocco)); Benyoussef, A. (MAScIR, Institute of Nanomaterials...</br>The effects of two different single-ion anisotropies on the magnetization of the mixed (7/2, 5/2) Ising ferrimagnetic system on a square lattice are investigated by the use of Monte Carlo simulation. The ground-state phase diagram...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:46059992
Cellular automata traffic flow behavior at the intersection of two roadsMarzoug, R; Ez-Zahraouy, H; Benyoussef, A (Laboratoire de Magnétisme et de physique des hautes energies (URAC 12) BP 1014, Faculté des sciences, Université Mohammed V Agdal, Rabat (Morocco)), E-mail: ezahamid@fsr.ac.ma</br>The control of vehicles in urban traffic is a requirement to maximize the flow and to ensure the safety of traffic. Using the cellular automata Nagel–Schreckenberg (NaSch) model within a parallel dynamic update, we studied the...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50042655
Core–shell structured square mixed-spin-2 and 3/2 Ising nanowire on the Bethe lattice: a Monte Carlo studyMasrour, R; Jabar, A (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, 63 46000, Safi (Morocco)); Hamedoun, M; Benyoussef, A (Institute of Nanomaterials and Nanotechnologies,...</br>The magnetic properties of square Ising nanowire on the Bethe lattice with core–shell structure consisting of spin-2 at the center and four spin-3/2 at the corners are studied by Monte Carlo simulation. The core–shell structured model...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:25001307
Magnetic properties of the three dimensional Ising model with interface single-ion anisotropyBenyoussef, A.; El Kenz, A. (Laboratoire de Magnetisme et Physique des Haute Energies, Dept. of Physique, Rabat (Morocco)); Ez Zahraouy, H. (International Centre for Theoretical Physics, Trieste (Italy)); Kaneyoshi, T. (Nagoya Univ....</br>International Centre for Theoretical Physics, Trieste (Italy)</br>Within the framework of effective-field theory, we investigate the effects of an interface singe-ion anisotropy on the magnetic properties in the simple cubic spin-1/2 Ising model. We find a new tricritical behaviour of the interface...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45015315
Magnetic properties of Mn-doped GaN with defects: ab-initio calculationsSalmani, E.; Benyoussef, A.; Ez-Zahraouy, H. (LMPHE, Departement de Physique, Faculté des Sciences, Université Mohammed V-Agdal, Rabat (Morocco)); Saidi, E. H. (LPHE, Departement de Physique, Faculté des Sciences, Université Mohammed...</br>According to first-principles density functional calculations, we have investigated the magnetic properties of Mn-doped GaN with defects, Ga<sub>1−x−y</sub>V<sub>Gx</sub>Mn<sub>y</sub> N<sub>1−z−t</sub>V<sub>Nz</sub>O<sub>t</sub>...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:29025527
Odd number of coupled antiferromagnetic anisotropic Heisenberg planes: A linear spin wave theoryBenyoussef, A. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Dept. de Physique, Faculte des Sciences, Rabat (Morocco)); Boubekri, A.; Ez-Zahraouy, H. (Laboratoire de Magnetisme et de Physique des Hautes Energies,...</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of the interplane and intraplane anisotropies on the energy gap for odd number of coupled quantum spin-1/2 antiferromagnetic anisotropic Heisenberg planes is investigated using a linear spin wave theory. However, in the...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:25046397
Magnetic properties of the three-dimensional Ising model with an interface amorphizationBenyoussef, A.; El Kenz, A. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Rabat (Morocco). Faculte des Sciences); El Amraoui, Y. (International Centre for Theoretical Physics, Trieste (Italy)); Saber, M. (Faculte...</br>International Centre for Theoretical Physics, Trieste (Italy)</br>A three-dimensional ferromagnetic Ising model with an interface amorphization is investigated with the use of the effective field theory. Phase diagrams and reduced magnetization curves of interface and bulks are studied. We obtain...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:26039633
Exchange integrals in the helimagnetic phase of ZnCr<sub>2x</sub>Al<sub>2-2x</sub>S<sub>4</sub> (0.85 ≤ x ≤ 1): A neutron diffraction studyHamedoun, M.; El Allam, D. (Sidi Mohammed Ben Abdellah Univ., Atals Fes (Morocco). Dept. de Physique); Rachadi, A.; Hourmatallah, A. (International Centre for Theoretical Physics, Trieste (Italy)); Benyoussef, A. (Laboratoire de Magnetisme...</br>International Centre for Theoretical Physics, Trieste (Italy)</br>The spinel solid solutions ZnCr<sub>2x</sub>Al<sub>2-2x</sub>S<sub>4</sub> have been studied by neutron diffraction experiments. They show a helimagnetic phase in the concentration range: 0.85 ≤ x ≤ 1. The helix angle decreases as...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:44113016
Effect of Co-Substitution on Magnetic Properties in Spinels GeNi<sub>2</sub>O<sub>4</sub> SystemsMasrourl, R.; Hamedoun, M.; Hourmatallah, A.; Bouslykhane, K.; Benzakour, N. (Lahoratoire de Physique du Solide, Université Sidi Mohammed Ben Ahdellah, Faculté des sciences, BP 1796, Fes (Morocco)); Benyoussef, A. (LMPHE, Faculté...</br>The magnetic properties of spinel GeNi<sub>2-2x</sub>Co<sub>2x</sub>O<sub>4</sub> systems in the range 0 ≤ x ≤ 1 are studied by mean Geld theory and high-temperature series expansions. The nearest neighbouring and the next-neighbouring...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:39063958
Random crystal-field effect on the spin-3/2 Blume-Capel modelBahmad, L.; Benyoussef, A. (Faculte des Sciences, Departement de Physique, Laboratoire de Magnetisme et Physique des Hautes Energies, B.P. 1014, Rabat (Morocco)); El Kenz, A. (Faculte des Sciences, Departement de Physique, Laboratoire...</br>Using the mean field theory, we investigate the effect of the random crystal-field on the spin-3/2 Blume-Capel model. Several new features are found including the appearance of new order phase with the magnetization m=1 at low temperature...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50016813
Ferromagnetic Nanoparticles of Ising Spin-1 with a Rubik’s Cube Structure: Monte Carlo SimulationsKadiri, A.; Ngantso, G. Dimitri.; Amraoui, Y. EL; Ez-Zahraouy, H.; Elkenz, A. (Mohammed V University of Rabat, Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Faculty of Sciences (Morocco)); Benyoussef,...</br>Using Monte Carlo simulations, magnetic properties of the ferromagnetic nanoparticles of Ising spin-1 are investigated in the framework of the Ising model. The system is considered to have a Rubik’s cube structure composed of nanocubes...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45026653
The magnetic properties of diluted CoFe<sub>2</sub>O<sub>4</sub> nanomaterialsMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Route Sidi Bouzid-BP 63 46000 Safi (Morocco)); Hamedoun, M.; Benyoussef, A. (LMPHE (URAC 12), Faculté...</br>The magnetic properties of (Co<sub>x</sub>Fe<sub>1−x</sub>)<sub>A</sub>(Zn<sub>1−x</sub>Fe<sub>1+x</sub>)<sub>B</sub>O<sub>4</sub> are studied using mean-field theory and the probability distribution law to obtain the saturation magnetization,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:49007567
The effects of synthesis conditions on the magnetic properties of zinc ferrite spinel nanoparticlesMaalam, K El; Fkhar, L; Mahhouti, Z; Mounkachi, O; Hamedoun, M; Benyoussef, A (Materials_Nanomaterials Center, MAScIR Foundation, B.P. 10100-Rabat (Morocco)); AitAli, M (Coordination Chemistry Laboratory, Cadi Ayyad University, Faculty...</br>Zinc ferrite nanocrystals were synthesized from metal chloride precursors via chemical co-precipitation method, using different synthesis conditions. Characterization measurements including X-ray diffraction (XRD), transmission electron...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51052561
The itinerant magnetism in a 3d-4d double perovskite Sr<sub>2</sub>CrMoO<sub>6</sub>Dimitri Ngantso, G.; Boujnah, M. (LMPHE, Mohammed V University - Sciences Faculty, Rabat (Morocco)); Benyoussef, A. (LMPHE, Mohammed V University - Sciences Faculty, Rabat (Morocco); Hassan II Academy of Science and Technology, Rabat...</br>Highlights: • Magnetic properties of the 3d-4d double perovskite Sr<sub>2</sub>CrMoO<sub>6</sub> have been studied. • The system is stabilized at ground state by the ferromagnetic phase of core spins. • Effective spins Hamiltonian...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:30060416
Phase diagram of ZnCr<sub>2p</sub>A1<sub>2-2p</sub>S(Se)<sub>4</sub> and Zn<sub>1-p</sub>Cd<sub>p</sub>Cr<sub>2</sub>S(Se)<sub>4</sub>Afif, K.; Benyoussef, A. (Laboratoire de Magnetisme et Physique des Hautes Energies, Departement de Physique, Faculte des Sciences, Universite Mohamed V, Rabat (Morocco)); Hamedoun, M.; Hourmatallah, A. (Laboratoire de Physique du...</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>We compute the phase diagram of the nonmetallic compounds ZnCr2<sub>p</sub>A1<sub>2-2p</sub>S(Se)<sub>4</sub> (I[S,Se]) and Zn<sub>1-p</sub>Cd<sub>p</sub>Cr<sub>2</sub>S(Se)<sub>4</sub> (II[S,Se]). We consider the bond-diluted Ising...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45029461
Mean-field and high temperature series expansion calculations of some magnetic properties of Ising and XY antiferromagnetic thin-filmsMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Safi (Morocco)); Hamedoun, M. (Institute for Nanomaterials and Nanotechnologies, MAScIr, Rabat (Morocco));...</br>In this work, the magnetic properties of Ising and XY antiferromagnetic thin-films are investigated each as a function of Néel temperature and thickness for layers (n = 2, 3, 4, 5, 6, and bulk (∞)) by means of a mean-field and high...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:32004858
Wetting and layering transitions of a spin-1/2 Ising model in a random transverse fieldBahmad, L.; Benyoussef, A.; El-Kenz, A. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Universite Mohammed V, Faculte des Sciences, Rabat (Morocco)); Ez-Zahraouy, H. (Laboratoire de Magnetisme et de Physique des Hautes...</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>The effect of a random transverse field (RTF) on the wetting and layering transitions of a spin-1/2 Ising model, in the presence of bulk and surface fields, is studied within an effective field theory by using the differential operator...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51084943
Mean-Field and Monte Carlo Studies of the Magnetic Properties of a Spin-7/2 and Spin-5/2 Ising Bilayer FilmKarimou, M.; Yessoufou, R. A. (Institute of Mathematics and Physical Sciences (IMSP) (Benin)); Ngantso, G. D. (Mohammed V University, LMPHE, Faculty of Sciences (Morocco)); Hontinfinde, F. (Institute of Mathematics and Physical Sciences...</br>We use standard Monte Carlo simulations based on the Metropolis algorithm and mean-field calculations to investigate the magnetic properties of an Ising bilayer film consisting of two superposed ferromagnetic squared lattices A and...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45032055
Monte Carlo study of nanowire magnetic propertiesMasrour, R.; Bahmad, L. (Laboratoire de Magnétisme et Physique des Hautes Energies, URAC 12, Université Mohammed V-Agdal, Faculté des Sciences, B.P. 1014, Rabat (Morocco)); Benyoussef, A. (Laboratory of Materials, Process, Environment...</br>In this work, we use Monte Carlo simulations to study the magnetic properties of a nanowire system based on a honeycomb lattice, in the absence as well as in the presence of both an external magnetic field and crystal field. The system...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51083324
Study of Magnetocaloric Effect on Strontium Ferrite SrFe<sub>12</sub>O<sub>19</sub> CeramicJabar, A.; Masrour, R. (Cadi Ayyed University, Laboratory of Materials, Processes, Environment and Quality, National School of Applied Sciences (Morocco)); Mounkachi, O.; Moussaoui, H. El; Hamedoun, M.; Benyoussef, A. (Institute of...</br>Magnetocaloric effect on SrFe<sub>12</sub>O<sub>19</sub> ceramic have been studied using Monte Carlo simulation. The thermal magnetization, dM/dT, magnetic entropy, and the specific heat of SrFe<sub>12</sub>O<sub>19</sub> ceramic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45015066
First-principles study and electronic structures of Mn-doped ultrathin ZnO nanofilmsSalmani, E.; Benyoussef, A.; Ez-Zahraouy, H. (LMPHE (URAC 12), Departement de Physique, Faculté des Sciences, Université Mohammed V-Agdal, Rabat (Morocco)); Saidi, E. H. (LPHE, Departement de Physique, Faculté des Sciences, Université...</br>The first-principles density functional calculation is used to investigate the electronic structures and magnetic properties of Mn-doped and N-co-doped ZnO nanofilms. The band structure calculation shows that the band gaps of ZnO...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51084881
Magnetic Properties of Carbon Co-Doped (Zn,Mn)O Using LDA and LDA-SIC ApproximationsGoumrhar, F. (Mohammed V University of Rabat, Laboratory of Physics of High Energy, Modelling & Simulations (LPHE-MS), Faculty of Sciences (Morocco)); Arybou, O.; Salmani, E.; Bahmad, L.; Ez-Zahraouy, H.; Benyoussef, A. (Mohammed...</br>In this paper, we used the ab-initio calculations, based on the Korringa-Kohn-Rostoker (KKR) method combined with the coherent potential approximation (CPA), to simulate the magnetic properties of ZnO, doped and co-doped with manganese...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51084929
Compensation Behavior in a Ferrimagnetic Mixed Spin-7/2 and Spin-3: Monte Carlo SimulationBouda, H.; Bahmad, L. (Mohammed V. University, Laboratory of Condensed Matter and Interdisciplinary Sciences, Department of Physics (LaMCScI), Faculty of Sciences (Morocco)); Masrour, R. (Cady Ayyed University, Laboratory of Materials,...</br>The ferrimagnetic systems have been extensively investigated because of their fascinating properties. In this paper, the mixed spin-7/2 and spin-3 Ising system with periodic boundary conditions on a square lattice has been studied...
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Exchange interactions in ML based on Mn-alloyed DMSC: 1. The d-d exchange interactionsAfif, K.; Benyoussef, A. (Laboratoire de Magnetisme et Physique des Hautes Energies, Departement de Physique, Faculte des Sciences, Universite Mohamed V, Rabat (Morocco)); El Metoui, M. (Groupe d'Electronique et de Physique du Solide,...</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>From a double theoretical comparison with experiment, we highlight the dimensional effects on magnetic properties resulting for short period structures. In a primary section, we perform spin-glass freezing temperature calculations...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50030646
Electronic structure and magnetic studies of V-doped ZnO: <b><i>ab initio</i></b> and experimental investigationsMamouni, N (Mohammed V University of Rabat, LMPHE, Faculty of Sciences (Morocco)); Vijaya, J Judith (Loyola College, Catalysis and Nanomaterials Research Laboratory, Department of Chemistry (India)); Benyoussef, A; El Kenz, A (Mohammed...</br>In this study, the electronic structure of V-doped ZnO system is studied by means of density functional theory. Different concentrations of V and rising of Fermi level increase the relative occupation of majority/minority spin of...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:42048877
Magnetic properties and phase diagram of Zn<sub>x</sub>Ni<sub>1-x</sub>Fe<sub>2</sub>O<sub>4</sub>: High-temperature series expansionsHamedoun, M. (INANOTECH (Institute of Nanomaterials and Nanotechnology), Rabat (Morocco)); Benyoussef, A. (INANOTECH (Institute of Nanomaterials and Nanotechnology), Rabat (Morocco); Hassan II Academy of Sciences and Technology, Rabat...</br>Using mean field theory and high-temperature series expansions (HTSEs), extrapolated with the Pade approximants method, the effect of Zn doping on magnetic properties of NiFe<sub>2</sub>O<sub>4</sub> ferrite spinel has been studied....
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48065457
Zero-field-cooled/field-cooled magnetization study of Dendrimer modelArejdal, M. (Laboratory of Magnetism and Physics of High Energies, Department of Physics, L.M.P.H.E (URAC-12), Faculty of Sciences, Mohammed V University, Rabat (Morocco)); Bahmad, L. (Laboratory of Magnetism and Physics of High Energies,...</br>Being motivated by Dendrimer model with mixed spins σ=3 and S=7/2, we investigated the magnetic nanoparticle system in this study. We analyzed and discussed the ground-state phase diagrams and the stable phases. Then, we elaborated...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51073450
Magnetic properties of the mixed spin-1 and spin-3/2 Ising system on a bilayer square lattice: A Monte Carlo studyJabar, A.; Masrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, 63 46000 Safi (Morocco)); Benyoussef, A. (Institute of Nanomaterials and Nanotechnologies,...</br>Highlights: • We employ Monte Carlo simulation technique to Ising model spin in bilayer square lattice. • We study effect of external magnetic field, crystal filed and exchange interactions in AFM/FM bliayer. • The magnetic coercive...
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Effect of Fe and V co-doping on ZnO by first principles study, electronic structure and magnetic propertiesMamouni, N; El Kenz, A; Benyoussef, A (LMPHE, Faculty of Sciences, Mohammed V University of Rabat (Morocco)); Judith Vijaya, J (Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 600...</br>In this paper, the magnetism of ZnO with wurtzite-type structure, when doped with Fe then co-doped with (Fe,V) was investigated by density functional theory. Furthermore, the difference between the ferromagnetic and the disordered...
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Interdistance effects on flat and buckled silicene like-bilayersNaji, S; Khalil, B; Bhihi, M; Benyoussef, A; Lakhal, M; Kenz, A El (LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat (Morocco)); Labrim, H (Centre National de l'Energie, des Sciences et des Techniques...</br>Using ab intio numerical calculations based on the all-electron full-potential local-orbital minimum-basis scheme FPLO9.00-34, we discuss the interdistance effect on the energy gap of two parallel layers of the silicone systems. The...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:44080996
Physical properties of Co(Mn)Fe<sub>2</sub>O<sub>4</sub> nanomaterialsHamedoun, M; Mounkachi, O; El moussaoui, H; Benyoussef, A (Institute for Nanomaterials and Nanotechnologies, MAScIR, Rabat (Morocco)); Masrour, R (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University,...</br>CoFe<sub>2</sub>O<sub>4</sub> and MnFe<sub>2</sub>O<sub>4</sub> ferrite nanoparticles were prepared by the co-precipitation method. The structural evolutions of the nanophase have been studied. The refinement result showed that the...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45029555
Hydrogen storage of Mg<sub>1−x</sub>M<sub>x</sub>H<sub>2</sub> (M = Ti, V, Fe) studied using first-principles calculationsBhihi, M.; Lakhal, M.; Benyoussef, A.; El Kenz, A. (Laboratoire de Magnétisme et de Physique des Hautes Energies, associé au CNRST (URAC 12), Département de Physique, B.P. 1014, Faculté des Sciences, Université Mohammed V-Agdal, Rabat...</br>In this work, the hydrogen storage properties of the Mg-based hydrides, i.e., Mg<sub>1−x</sub> M<sub>x</sub> H<sub>2</sub> (M = Ti, V, Fe, 0 ≤ x ≤ 0.1), are studied using the Korringa—Kohn—Rostoker (KKR) calculation with the coherent...
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Magnetic and electronic properties of double perovskite Lu2MnCoO6: Ab-initio calculations and Monte Carlo simulationSidi Ahmed, S. (Laboratoiry of Magntism and Physics of High Energies, Physics Department, Faculty of Sciences, Mohamed V University, Rabat (Morocco); LPHE-Modeling and Simulations, Faculty of Sciences, Mohamed V University, Rabat...</br>Highlights: • The ground-state phases have been determined. • The magnetic and electronic properties of mixed spins based on double Perovskite Oxide Structure have been investigated. • The coupling interaction between different magnetic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:52014641
Modelling of the ferroelectric and energy storage properties of PbZr<sub>1−x</sub>Ti<sub>x</sub>O<sub>3</sub> thin films using Monte Carlo simulationAit Tamerd, M; Abraime, B; El Kenz, A (LaMCScI (PPR15), Faculty of Science, Mohammed V University, Rabat (Morocco)); El Rhazouani, O (Institut supérieur des sciences de la santé, BP 555, Settat (Morocco)); Lahmar, A; El Marssi, M...</br>A Monte Carlo model was developed to study the ferroelectric and energy storage properties of PbZr<sub>1−x</sub>Ti<sub>x</sub>O<sub>3</sub> (PZT). The proposed model aims to calculate the exchange coupling constants in ferroelectric...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51039289
Magnetism in d<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi></mi><mn>0</mn></msup></math> impurities doped CdTe. Ab-initio calculationsGoumrhar, F. (Laboratory of Physics of High Energy, Modeling and Simulations (LPHE-MS), Faculty of Sciences, Mohammed V University of Rabat (Morocco)); Mounkachi, O.; Bahmad, L.; Salmani, E. (Laboratory of Condensed Matter and Interdisciplinary...</br>In this work, using the ab-initio calculations, we have investigated the phantom magnetism when the diamagnetic solids, carbon and nitrogen with d<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi></mi><mn>0</mn></msup></math>...
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Effective field study of ising model on a double perovskite structureNgantso, G. Dimitri; El Amraoui, Y. (LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V, Rabat (Morocco)); Benyoussef, A. (LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V, Rabat (Morocco); Center of Materials...</br>By using the effective field theory (EFT), the mixed spin-1/2 and spin-3/2 Ising ferrimagnetic model adapted to a double perovskite structure has been studied. The EFT calculations have been carried out from Ising Hamiltonian by taking...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45026458
Study of electronic and magnetic properties of MnS layersMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Safi (Morocco)); Hlil, E. K. (Institut Néel, CNRS et Université Joseph Fourier, BP 166, F-38042...</br>Self-consistent ab initio calculations, based on the density functional theory (DFT) and using the full potential linear augmented plane wave (FLAPW) method, are performed to investigate both electronic and magnetic properties of...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51090775
Magnetic properties of ErC: A Monte Carlo simulation studyMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, BP 63, 46000, Sidi Bouzid, Safi (Morocco)); Bahmad, L.; Benyoussef, A. (LMPHE (URAC 12), Faculté...</br>Magnetic properties of ferromagnetic sites have been studied using Monte Carlo simulations within the Ising model framework. The considered Hamiltonian includes first nearest-neighbor, an external magnetic field and a crystal field....
http://inis.iaea.org/Search/search.aspx?orig_q=RN:52024210
Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticlesMahhouti, Z.; El Moussaoui, H.; Mahfoud, T.; Hamedoun, M. (MAScIR Foundation, Institute of Nanomaterials and Nanotechnologies, Materials and Nanomaterials Center (Morocco)); El Marssi, M.; Lahmar, A. (Université de Picardie Jules...</br>In this work, a successful synthesis of magnetic cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) nanoparticles is presented. The synthesized CoFe<sub>2</sub>O<sub>4</sub> nanoparticles have a spherical shape and highly monodisperse...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:49007566
First-principles study of electronic, electrical and optical properties of HoMn<sub>2</sub>O<sub>5</sub>Tamerd, M Ait; Abbassi, A; Kenz, A El (LMPHE (URAC 12), Physics department, Faculty of Sciences, Mohammed V University, Rabat (Morocco)); Abraime, B; Maalam, K El; Benyoussef, A; Hamedoun, M; Mounkachi, O (Institute of Nanomaterials...</br>In this work, we have studied the electronic, electrical and optical properties of HoMn2O5 using first-principles density functional theory within the generalized gradient approximation (GGA). The electrical conductivity decreases...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51084143
Antiferromagnetic properties of CoO nanoparticle: a Monte Carlo simulationMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, National School of Applied Sciences, Cady Ayyed University, Sidi Bouzid, BP 63, 46000, Safi (Morocco)); Bahmad, L.; Benyoussef, A. (LMPHE URAC 12, Faculté des...</br>The magnetic properties of antiferromagnetic CoO compound have been studied using Monte Carlo simulations within the Ising model framework. The thermal magnetizations and magnetic susceptibilities are computed for a fixed size. In...
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Decorated ferrimagnetic Ising model with a random crystal fieldBenyoussef, A. (Laboratoire de Magnetisme et de physique des Hautes Energies, Departement de physique, B.P. 1014, Faculte des sciences, Rabat (Morocco)); El Kenz, A. (Laboratoire de Magnetisme et de physique des Hautes Energies, Departement...</br>A mean-field approximation is used to study the effects of random crystal field on the critical behaviour of decorated ferrimagnetic Ising model, in which the two magnetic atoms A and B have spins σ<sub>A</sub>=12 and S<sub>B</sub>=1,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:31032898
Exchange interactions in ML based on Mn-alloyed DMSC: II. The sp-d exchange interactionsAfif, K. (Laboratoire de Magnetisme, Faculte des Sciences, Rabat (Morocco); Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)); Benyoussef, A. (Laboratoire de Magnetisme, Faculte des Sciences, Rabat (Morocco));...</br>Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)</br>Conduction and valence band offsets and binding energy of wannier excitons in multilayers are affected by autocorrelation effects, sp<sup>3</sup>-d coupling is consequently modified. Thus, the calculation of the Zeeman splitting in...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:47038941
Ab-initio study of magnetic properties and phase transitions in Ga (Mn) N with Monte Carlo approachSbai, Y.; Ait Raiss, A.; Salmani, E. (LMPHE (URAC 12), Faculty of Science, Mohammed V University, Av. Ibn Batouta, Rabat (Morocco)); Bahmad, L. (LMPHE (URAC 12), Faculty of Science, Mohammed V University, Av. Ibn Batouta, Rabat (Morocco));...</br>On the basis of ab-initio calculations and Monte Carlo simulations the magnetic and electronic properties of Gallium nitride (GaN) doped with the transition metal Manganese (Mn) were studied. The ab initio calculations were done using...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:41088928
Magnetic properties of MnCr<sub>2</sub>O<sub>4</sub> nanoparticleMasrour, R. (Solid State Physics Laboratory, Sidi Mohammed Ben Abdellah University, Sciences Faculty, BP 1796, Fez (Morocco); LMPHE, Faculte des Sciences, Universite Mohamed V, Rabat (Morocco)); Hamedoun, M. (Institute for Nanomaterials...</br>The exchange interactions and the magnetic exchange energies are calculated by using the mean field theory and the probability law of Zn<sub>1-x</sub>Mn<sub>x</sub>Cr<sub>2</sub>O<sub>4</sub> nanoparticles. The high-temperature series...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50017102
First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) SubstrateBachra, M. El; Zaari, H. (Université Mohammed V, Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI), associé au CNRST (URAC 12), Département de Physique, Faculté des Sciences (Morocco)); Benyoussef, A. (Hassan...</br>The structural and electronic properties of the monolayer and bilayer stanene structures have been studied using first-principles calculations. For the monolayer, the buckled structure is more stable than the flat one, with an opening...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48102291
Monte Carlo and Ab-initio calculation of TM (Ti, V, Cr, Mn, Fe, Co, Ni) doped MgH_2 hydride: GGA and SIC approximationSalmani, E. (LMPHE (URAC12), Faculty of Sciences, Mohammed V University in Rabat (Morocco)); Laghrissi, A.; Lamouri, R. (LMPHE (URAC12), Faculty of Sciences, Mohammed V University in Rabat (Morocco)); Benchafia, E. (Department of...</br>MgH_2: TM (TM: V, Cr, Mn, Fe, Co, Ni) based dilute magnetic semiconductors (DMS) are investigated using first principle calculations. Our results show that the ferromagnetic state is stable when TM introduces magnetic moments as well...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51084175
Monte Carlo simulation study of magnetic properties of Fe-doped Li<sub>3</sub>V<sub>2</sub> (PO<sub>4</sub>)<sub>3</sub>Masrour, R. (Laboratory of Materials, Processes, Environment and Quality, National School of Applied Sciences, Cady Ayyed University, PB 63, 46000, Safi (Morocco)); Jabar, A.; Benyoussef, A. (Laboratoire de Magnétisme et Physique...</br>The Fe-doped Li<sub>3</sub>V<sub>2</sub> (PO<sub>4</sub>)<sub>3</sub> cathode materials for Li-ion batteries are studied by using the Monte Carlo simulations. The thermal magnetizations and magnetic susceptibilities of Li<sub>3</sub>V<sub>2</sub>...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48025632
Antisite disorder study by Monte Carlo simulation of the double perovskite Sr_2CrReO_6El Rhazouani, O. (LMPHE, (URAC), Department of Physics, Faculté des Sciences, Université Mohammed V-Agdal, Rabat (Morocco)); Benyoussef, A. (LMPHE, (URAC), Department of Physics, Faculté des Sciences, Université Mohammed V-Agdal,...</br>In the last few years there has been a growing interest in the double perovskite (DP) Sr_2CrReO_6, as a magnetic material used in spintronics, due to its high Curie temperature (T_C=610 K). Antisite disorder is a defect that affects...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51079784
Unexpected magnetic behavior of Ga doped CuFe<sub>1-x</sub>Ga<sub>x</sub>O<sub>2</sub> delafossite, x = 0.04: First principle calculation and Monte Carlo simulationBouda, H.; Bahlagui, T. (University Mohammed V, Laboratory of Condensed Matter and Interdisciplinary Sciences, Department of Physics (LaMCScI), Faculty of Sciences (Morocco)); Masrour, R. (Cady Ayyed University, National School of...</br>The structural electronic and magnetic properties of Ga doped delafossite CuFe<sub>0.96</sub>Ga<sub>0.04</sub>O<sub>2</sub> are investigated using first principle calculations and Monte Carlo simulation. The calculations are based...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48028170
Comparable studies of magnetic properties of Ising spins-5/2 and 3/2 systems on decorated square and triangular latticesMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, 63 46000 Safi (Morocco)); Jabar, A. (Laboratory of Materials, Processes, Environment and Quality,...</br>In this work, we have studied and compared the magnetic properties of Ising spins-5/2 and 3/2 systems on decorated square and triangular lattices using the Monte Carlo simulations. The transition temperature of the two-dimensional...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50020200
Ab Initio and Monte Carlo Approaches for the Magnetocaloric Effect in BaMnO<sub>3</sub> Oxide PerovskiteMasrour, R.; Jabar, A. (Cady Ayyed University, National School of Applied Sciences, Laboratory of Materials, Processes, Environment and Quality (Morocco)); Hlil, E. K. (CNRS et Université Grenoble Alpes, Institut Néel (France)); Hamedoun,...</br>The self-consistent ab initio calculations, based on density functional theory approach (DFT) and using full potential linearised augmented plane wave (FLAPW) method, have been used to investigate both electronic and magnetic properties...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51086771
Hysteresis Cycle and Magnetization Behaviors of a Mixed-Spin (7/2, 3/2) Ferrimagnetic Ising Model: Monte Carlo InvestigationBouda, H.; Bahlagui, T.; Bahmad, L. (University Mohammed V, Laboratory of Condensed Matter and Interdisciplinary Sciences Department of Physics (LaMCScI), Faculty of Sciences (Morocco)); Masrour, R. (Cady Ayyed University, Laboratory...</br>The effects of single-ion anisotropies and an external magnetic field on the magnetization of the mixed-spin (7/2, 3/2) ferrimagnetic Ising system are investigated within Monte Carlo simulation. Under certain values of the physical...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51085051
Monte Carlo Study of the Mixed-Spin (1/2, 2) Ferrimagnetic Ising System on a Honeycomb LatticeZahir, H. (Hassan I University, Laboratory LS3M, Polydisciplinary Faculty (Morocco)); Bahlagui, T.; Kenz, A. El (Mohammed V–Agdal University, Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI), Faculty of Sciences...</br>By means of the Monte Carlo method, we have simulated the mixed-spin-1/2 and spin-2 Ising ferrimagnetic system on a honeycomb lattice. We studied the variations of the magnetization as functions of the crystal field and the temperature...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50049802
Structural, electronic, magnetic, and magnetocaloric properties in metallic antiperovskite compound Mn3GaCEnnassiri, N.; Tahiri, N. (Laboratory of Condensed Matter and Interdisciplinary Sciences, Faculty of Sciences, Mohammed V University in Rabat (Morocco)); El Bounagui, O. (LPHE-MS, Mohammed V University in Rabat (Morocco)); Ez-Zahraouy,...</br>Highlights: • We have studied the magnetocaloric effect of the metallic antiperovskite compound Mn<sub>3</sub>GaC. • We used the ab-initio calculations, the Monte Carlo simulations and mean field theory. • A second-order ferromagnetic-paramagnetic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:41059572
Magnetic phase transition in antiferromagnetic filmsMasrour, R. (Solid State Physics Laboratory, Sidi Mohammed Ben Abdellah University, Faculty of Sciences, BP 1796 Fes (Morocco)); Hamedoun, M. (Solid State Physics Laboratory, Sidi Mohammed Ben Abdellah University, Faculty of Sciences,...</br>The susceptibility of body-centered cubic lattice (bcc) antiferromagnetic spin-1/2 through two model: Ising and XY films consisting of n=2,3,4,5, and 6 interacting layers is studied by high-temperature series expansions. Sixth order...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:44031054
Phase transition in Ising, XY and Heisenberg magnetic filmsMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Route Sidi Bouzid - BP 63 46000 Safi (Morocco); LMPHE, Faculté des Sciences, Université Mohamed...</br>The phase transition and magnetic properties of a ferromagnet spin-S, a disordered diluted thin and semi-infinite film with a face-centered cubic lattice are investigated using the high-temperature series expansions technique extrapolated...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:40009482
Ab initio calculation of Zn<sub>0.8</sub>Mn<sub>0.2</sub>O<sub>1-y</sub>N<sub>y</sub>Mounkachi, O.; Benyoussef, A. (Laboratoire de Magnetisme et de Physique des Hautes Energies, Departement de Physique, Faculte des Sciences, B.P. 1014, Rabat (Morocco)); El Kenz, A. (Laboratoire de Magnetisme et de Physique des Hautes...</br>Based on first-principles spin-density functional calculations, using the Korringa-Kohn-Rostoker method (KKR) combined with the coherent potential approximation (CPA), we investigated the magnetic and half-metallic properties of Mn-doped...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:37023051
Effect of the inhomogeneity of substrate on wetting transitionsEz-Zahraouy, H. (LaboratoiRe de Magnetisme et de la Physique des Hautes Energies, Universite Mohammed V, Faculte des Sciences, Avenue Ibn Batouta, Rabat B.P. 1014 (Morocco)); Bahmad, L. (LaboratoiRe de Magnetisme et de la Physique...</br>We study the substrate inhomogeneity effect on the wetting of a spin-1/2 Ising ferromagnetic film in an external magnetic field H, using Monte Carlo simulations. It is found that the inhomogeneity leads to the formation of clusters...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:43098239
The magnetic properties of oxide spinel Li<sub>0.5</sub>Fe<sub>2.5-2x</sub>Al<sub>x</sub>Cr<sub>x</sub>O<sub>4</sub> solid solutionsMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Sidi bouzid, Safi (Morocco); LMPHE, Faculté des Sciences, Université Mohamed V, Rabat (Morocco));...</br>The exchange interactions (J<sub>BB</sub> and J<sub>AB</sub> are the intra and the inter-sublattice exchange interactions between neighbouring spins, respectively) are obtained by using the general expressions of canting angle and...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:42033583
Magnetic properties of B and AB-spinels Zn<sub>1-x</sub>M<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> (M = Ni, Mg) materialsMasrour, R. (Laboratoire de Physique du Solide, Universite Sidi Mohammed Ben Abdellah, Faculte des Sciences, BP 1796, Fes (Morocco); LMPHE, Faculte des Sciences, Universite Mohamed V, Rabat (Morocco)); Hamedoun, M. (Expert Aupres...</br>The magnetic properties of diluted spinels Zn<sub>1-x</sub>M<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> (M = Mg, Ni) systems have been studied by mean field theory, probability law and high-temperature series expansions method in the...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:42075791
Magnetic properties of magnetic Co<sub>1-x</sub>Mg<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> spinel by HTSE methodHamedoun, M. (INANOTECH (Institute of Nanomaterials and Nanotechnology), MASCIR (Moroccan Advanced Science, Innovation and research Foundation), Rabat (Morocco)); Benyoussef, A. (INANOTECH (Institute of Nanomaterials and Nanotechnology),...</br>Magnetic properties and exchange-coupling interactions of diluted magnetic spinels A<sub>1-x</sub>A'<sub>x</sub>B<sub>2</sub>X<sub>4</sub>, where A and B are magnetic ions, namely Co<sub>1-x</sub>Mg<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub>,...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:46115173
Phase diagram of the double perovskite Sr<sub>2</sub>CrReO<sub>6</sub>: Effective-field theoryEl Rhazouani, O. (LMPHE, URAC 12, Department of Physics, Faculté des Sciences, Université Mohammed V-Agdal, Rabat (Morocco)); Benyoussef, A. (LMPHE, URAC 12, Department of Physics, Faculté des Sciences, Université...</br>The double perovskite Sr<sub>2</sub>CrReO<sub>6</sub> has very important characteristics for spintronic applications. It is a ferrimagnetic material distinguished by its high Curie temperature T<sub>c</sub>≈635 K. We made this...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48060060
High efficiency of transmittance and electrical conductivity of V doped ZnO used in solar cells applicationsBoujnah, M. (Laboratory of Magnetism and Physics of High Energies, Department of Physics, B.P. 1014, Faculty of Sciences, Mohammed V University, Rabat (Morocco)); Boumdyan, M. (Laboratory of Magnetism and Physics of High Energies,...</br>The full-potential linearized augmented plane wave method (FP-LAPW) based on the density functional theory (DFT) and Boltzmann's Transport theory, are employed to investigate theoretically the electronic structure, optical and electrical...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:46039361
Electronic and magnetic structures of GdS layers investigated by first principle and series expansions calculationsMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, 63 46000 Safi (Morocco); LMPHE (URAC 12), Faculty of Science, Mohammed V-Agdal University, Rabat...</br>Self-consistent ab initio calculations, based on Density Functional Theory (DFT) approach and using Full Potential Linear Augmented Plane Wave (FLAPW) method within GGA+U approximation, are performed to investigate both electronic...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:48031206
Theoretical investigation of electronic, magnetic and optical properties of ZnSe doped TM and co-doped with MnTM (TM: Fe, Cr, Co): AB-initio studyBehloul, M. (LMPHE (URAC 12), Departement of Physique, B.P. 1014, Faculty of Science, University Mohammed V, Rabat (Morocco)); Salmani, E. (LMPHE (URAC 12), Departement of Physique, B.P. 1014, Faculty of Science, University Mohammed...</br>Based upon the first principal spin density functional calculation, the electronic, magnetic and optical properties of ZnTMSe and ZnMnTMSe where TM=Fe, Cr, Co are studied using the Korringa-Kohn-Rostoker coherent potential approximation...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:50017205
Random Crystal Field Effect on the Kinetic Spin-1 and Spin-3/2 Under a Time-Dependent Oscillating Field Phase TransitionsSabri, S. (Mohammed V University, Faculty of Sciences, Laboratoire de la Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Department of Physics (Morocco)); Falaki, M. EL (Chouaib Doukkali University, Faculty of Sciences,...</br>The effect of random crystal field on the stationary states of the kinetic spin-1 and spin-3/2 Blume-Capel model is investigated within the framework of the mean field approach. The Glauber-type stochastic dynamics is used to describe...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51083336
Magnetic and Structural Properties of Novel Neodymium-Tin Spinel Ferrite NanoparticlesFkhar, L. (Cadi Ayyad University, Coordination Chemistry Laboratory, Faculty of Sciences Semlalia (UCA-FSSM) (Morocco)); Kenz, A. El (Mohammed V University, LaMCScI, Faculty of Science (Morocco)); Hamedoun, M.; Benyoussef, A. (Moroccan...</br>Novel spinel neodymium-tin ferrite nanoparticles (Nd<sub>0.5</sub>Sn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>) have been synthesized by the coprecipitation method; x-ray diffraction (XRD), transmission electron microscopy (TEM), and...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:47038781
Comparative study between TB-mBJ and GGA+U on magnetic and optical properties of CdFe_2O_4Zaari, H.; El Hachimi, A.G. (Laboratory of Magnetism and Physics of the High Energies, Department of Physics (L.M.P.H.E.URAC 12), University Mohammed V, Rabat (Morocco)); Benyoussef, A. (Laboratory of Magnetism and Physics of the...</br>Full Potential Linearized Augmented Plane Wave (FP-LAPW) based on density functional theory (DFT) is carried out to study the density of states, optical properties and XMCD properties of bulk spinel ferrite CdFe_2O_4. The exchange...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:45015333
Electronic and magnetic structures of V-doped zinc blende Zn<sub>1−x</sub>V<sub>x</sub>N<sub>y</sub>O<sub>1−y</sub> and Zn<sub>1−x</sub>V<sub>x</sub>P<sub>y</sub>O<sub>1−y</sub>Mamouni, N.; Benyoussef, A.; Kenz, A. El; Ez-Zahraouy, H.; Loulidi, M. (Laboratoire de Magnétisme et de Physique des Hautes Energies Département de Physique, Associé au CNRST, URAC, B. P. 1014, Faculté des Sciences, Rabat (Morocco));...</br>Electronic and magnetic structures of zinc blende ZnO doped with V impurities are studied by first-principles calculations based on the Korringa—Kohn—Rostoker (KKR) method combined with the coherent potential approximation (CPA)....
http://inis.iaea.org/Search/search.aspx?orig_q=RN:43065513
Monte Carlo simulation of magnetic phase transitions in Mn-doped ZnODrissi, L.B. (INANOTECH, Institute of Nanomaterials and Nanotechnology (MAScIR), Rabat (Morocco); International Centre for Theoretical Physics, ICTP, Trieste (Italy)); Benyoussef, A. (INANOTECH, Institute of Nanomaterials and Nanotechnology...</br>The magnetic properties of Mn-doped ZnO semiconductor have been investigated using the Monte Carlo method within the Ising model. The temperature dependences of the spontaneous magnetization, specific heat and magnetic susceptibility...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:51116006
Calculation of exchange constants in spinels chromites Zn<sub>x</sub>Co<sub>1-x</sub>Cr<sub>2</sub>O<sub>4</sub>Masrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, Safi (Morocco); LMPHE, URAC 12, Faculté des Sciences, Université Mohamed V-Agdal, Rabat (Morocco));...</br>The exchange interactions of the nearest-neighbor exchange constant between tetrahedral and octahedral sublattices (J<sub>AB</sub>(x)), nearest-neighbor exchange constant inside tetrahedral sublattice (J<sub>AA</sub>(x)) and nearest-neighbor...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:46043224
Magnetic properties of mixed Ni–Cu ferrites calculated using mean field approachMasrour, R. (Laboratory of Materials, Processes, Environment and Quality, Cady Ayyed University, National School of Applied Sciences, 63, 46000 Safi (Morocco); LMPHE, URAC 12, Faculté des Sciences, Université Mohamed V-Agdal, Rabat...</br>The magnetic properties of spinel ferrites [Fe<sub>1−(1−x)y</sub><sup>3+</sup>Cu<sub>(1−x)y</sub><sup>2+</sup>]<sub>A</sub>[Ni<sub>x</sub><sup>2+</sup>Cu<sub>(1−x)(1−y)</sub><sup>2+</sup>Fe<sub>1+(1−x)y</sub><sup>3+</sup>]<sub>B</sub>O<sub>4</sub>...
http://inis.iaea.org/Search/search.aspx?orig_q=RN:41107588
The magnetic state of diamagnetically diluted antiferromagnetic cobalt and nickel monoxideMasrour, R. (Laboratoire de Physique du Solide, Universite Sidi Mohammed Ben Abdellah, Faculte des sciences, BP 1796, Fes (Morocco)); Hamedoun, M. (Laboratoire de Physique du Solide, Universite Sidi Mohammed Ben Abdellah, Faculte...</br>The nearest neighbour J<sub>1</sub>(x) and the next-neighbour super-exchange J<sub>2</sub>(x) interactions are evaluated by using the mean field theory for Mg<sub>1-x</sub>B<sub>x</sub>O (B=Co and Ni) systems. The magnetic energy...