Formation, Sinterability, and Characteristics of La ( Cr1 − xMgx ) O 3 Prepared by a Sol‐Gel Technique Using Hydrazine

Abstract

In , single‐phase perovskite compounds , where x = 0 to 0.28, have been formed at low temperatures (∼800°C) by decomposition of which crystallizes at ∼550°C from amorphous materials prepared by the hydrazine method. powders consisting of submicrometer‐size are highly sinterable; dense materials can be fabricated by sintering for 2 h at 1600°C under atmospheric pressure. The relative densities, grain sizes, electrical conductivities, and thermal expansion coefficients of the materials increase with increased content. materials show an excellent electrical conductivity at elevated temperatures. Their thermal expansion coefficient is in good agreement with that of cubic as an electrolyte. © 2000 The Electrochemical Society. All rights reserved.