Krsmanovic, R. and Morozov, V. A. and Lebedev, O. I. and Polizzi, S. and Speghini, A. and Bettinelli, M. and Van Tendeloo, G. (2007) Structural and luminescence investigation on gadolinium gallium garnet nanocrystalline powders prepared by solution combustion synthesis. NANOTECHNOLOGY, 18 (32).
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Official URL: http://www.iop.org/EJ/abstract/0957-4484/18/32/325...
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) over 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 Gd(3-x)Ln(x)Ga(5)O(12), x approximate to 0.3 ( Ln = Pr; Tm) have been obtained. The luminescence properties of the Tm3+ -doped nanocrystalline GGG samples were measured and analysed.
|Uncontrolled Keywords:||PULSED-LASER DEPOSITION; EUROPIUM-DOPED YTTRIA; VISIBLE UP-CONVERSION; FLUORESCENCE PROPERTIES; ALUMINUM-GARNET; TM3+ IONS; EMISSION; GD3GA5O12; Y3AL5O12; YAG|
|Subjects:||Analytical Science > Microscopy and probe methods|
Material Science > Nanostructured materials
|Deposited On:||28 Sep 2009 11:58|
|Last Modified:||28 Sep 2009 11:58|
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