Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis
Creators
- 1. EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp (Belgium)
- 2. Department of Chemistry, Moscow State University, 119899 Moscow (Russian Federation)
- 3. Department of Physical Chemistry, Ca Foscari University of Venice, Via Torino 155/b, I-30172 Venice (Italy)
- 4. Dipartimento Scientifico e Tecnologico, University of Verona and INSTM, UdR Verona, Ca Vignal, Strada Le Grazie 15, I-37134 Verona (Italy)
Description
Nanocrystalline powders of undoped and lanthanide (Pr3+, Tm3+)-doped gadolinium gallium garnet, Gd3Ga5O12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray diffraction patterns of the GGG samples were analysed using the Rietveld method. The Rietveld refinement reveals the existence of two garnet-type phases: both are cubic (space group Ia 3-bar d) with a slightly different lattice parameter and probably a slightly different composition. Electron diffraction and electron microscopy measurements confirm the x-ray diffraction results. EDX measurements for lanthanide-doped samples show that stable solid solutions with composition Gd3-xLnxGa5O12, x∼0.3 (Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm3+-doped nanocrystalline GGG samples were measured and analysed
Additional details
Identifiers
- DOI
- 10.1088/0957-4484/18/32/325604;
- PII
- S0957-4484(07)45804-4;
Publishing Information
- Journal Title
- Nanotechnology (Print)
- Journal Volume
- 18
- Journal Issue
- 32
- Journal Page Range
- p. 325604
- ISSN
- 0957-4484
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39040741
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COMBUSTION; CRYSTALS; CUBIC LATTICES; DOPED MATERIALS; ELECTRON DIFFRACTION; GADOLINIUM COMPOUNDS; GALLIUM COMPOUNDS; GARNETS; LATTICE PARAMETERS; LUMINESCENCE; NANOSTRUCTURES; POWDERS; PRASEODYMIUM IONS; SOLID SOLUTIONS; SPACE GROUPS; SPECTROSCOPY; SYNTHESIS; THULIUM IONS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
- Descriptors DEC
- CHARGED PARTICLES; CHEMICAL REACTIONS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; DISPERSIONS; ELECTRON MICROSCOPY; EMISSION; HOMOGENEOUS MIXTURES; IONS; MATERIALS; MICROSCOPY; MINERALS; MIXTURES; OXIDATION; PHOTON EMISSION; RARE EARTH COMPOUNDS; SCATTERING; SILICATE MINERALS; SOLUTIONS; SYMMETRY GROUPS; THERMOCHEMICAL PROCESSES