Transport properties of new Ti manganites: Sr2-xLaxMnTiO6 (0.25 ≤ x ≤ 1)
- 1. Departamento de QuImica Inorganica I, Facultad de Ciencias QuImicas, Universidad Complutense, Madrid-28040 (Spain)
Description
Sr2-xLaxMnTiO6 (0.25 ≤ x ≤ 1) orthorhombic perovskite-like system has been synthesized by the ceramic method. Structural characterization from x-ray and neutron diffraction shows a random distribution of Sr/La and Mn/Ti cations, in A- and B-sublattices, respectively, in all the cases. These materials show complex magnetic behaviour which can be interpreted in terms of frustrated FM interactions, considering a cluster-glass picture. M-I transitions have been observed for x = 0.75, 1 and negative MR responses in the ranges of 1000% and 90% have been detected at 40 K and 210 K, respectively. Magnetization (ZFC and FC) measurements in ac and dc are interpreted considering the existence of superparamagnetic clusters embedded in a paramagnetic matrix
Additional details
Identifiers
- DOI
- 10.1088/0022-3727/40/10/001;
- PII
- S0022-3727(07)37884-4;
Publishing Information
- Journal Title
- Journal of Physics. D, Applied Physics
- Journal Volume
- 40
- Journal Issue
- 10
- Journal Page Range
- p. 3016-3023
- ISSN
- 0022-3727
- CODEN
- JPAPBE
Conference
- Title
- Symposium P - Nanoscale magnets: Synthesis, self-assembly, properties and applications
- Acronym
- Fall 2006 meeting of the Materials Research Society
- Dates
- 27 Nov - 1 Dec 2006
- Place
- Boston, MA (United States)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38083509
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CATIONS; CERAMICS; CHARGED-PARTICLE TRANSPORT; LANTHANUM COMPOUNDS; LANTHANUM IONS; MAGNETIZATION; MANGANESE COMPOUNDS; MANGANESE IONS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; PARAMAGNETISM; PEROVSKITE; STRONTIUM IONS; STRONTIUM TITANATES; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TITANIUM IONS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHARGED PARTICLES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; IONS; MAGNETISM; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PEROVSKITES; RADIATION TRANSPORT; RARE EARTH COMPOUNDS; SCATTERING; STRONTIUM COMPOUNDS; TEMPERATURE RANGE; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS