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New combustion synthesis technique for the production of (InxGa1−x)2O3 powders: Hydrazine/metal nitrate method

Published online by Cambridge University Press:  31 January 2011

R. GarcÍa
Affiliation:
Programa de Posgrado en Física de Materiales CICESE-CCMC-UNAM Km. 103 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, México
G. A. Hirata
Affiliation:
Programa de Posgrado en Física de Materiales CICESE-CCMC-UNAM Km. 103 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, México
J. McKittrick
Affiliation:
Department of Mechanical and Aerospace Engineering and Materials Science and Engineering Program, University of California at San Diego, La Jolla, California 92093-0411
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Abstract

A new low-temperature method to produce (InxGa1−x)2O3 (x = 0.1, 0.2, and 0.3) powders with high purity, high chemical homogeneity and improved crystallinity in the as-synthesized state has been developed. This procedure produced finely divided powders through an exothermic reaction between the precursors. The process starts with aqueous solutions of In(NO3)3 and Ga(NO3)3 as the precursors and hydrazine as the (noncarbonaceous) fuel. The combustion reaction occurred when heating the precursors between 150 and 200 °C in a closed vessel filled with an inert gas (Ar), which yields (InxGa1−x)2O3 directly. These materials were compared with powders prepared by a more typical combustion synthesis reaction between nitrates and a carbonaceous fuel at a higher ignition temperature of 500 °C.

Type
Articles
Copyright
Copyright © Materials Research Society 2001

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