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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7501

Title: Study on phase evolution of GdAl(1-x)Ga(x)O(3) system
Authors: SINHA, A
SHARMA, BP
GOPALAN, P
NAFE, H
Keywords: doped lanthanum gallate
oxygen-ion conductivity
perovskite-type oxides
fuel-cells
electrical-conductivity
transport-properties
crystal-structure
laalo3
lagao3
electrolyte
Issue Date: 2010
Publisher: ELSEVIER SCIENCE SA
Citation: JOURNAL OF ALLOYS AND COMPOUNDS, 492(1-2), 325-330
Abstract: In the present investigation, phase evolution of GdAl(1-x)Ga(x)O(3) system was investigated by preparing a series of powders through citrate gel route. The powders were calcined at 1000 degrees C for 2 h and characterized for phase purity using X-ray diffraction (XRD). Sintering of a few selected compositions was carried out at 1550 degrees C for 4 h. The microstructural analysis of the sintered specimens was carried out using scanning electron microscopy (SEM) coupled with energy dispersive X-ray analyzer (EDS). It was observed that the preparation of GdGaO(3) through citrate gel route resulted in the formation of two-phase mixture of Gd(3)Ga(5)O(12) and Gd(2)O(3). In GdAl(1-x)Ga(x)O(3) system, gallium could be dissolved in GdAlO(3) lattice up to a doping level of 4 mol%. At higher doping level, the un-dissolved gallium precipitated in the form of Gd(3)Al(4)GaO(12). (C) 2009
URI: http://dx.doi.org/10.1016/j.jallcom.2009.11.086
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7501
http://hdl.handle.net/10054/7501
ISSN: 0925-8388
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