Abstract

In Mg 2+-substituted YCrO 3, single-phase perovskite compounds Y(Cr 1− x Mg x )O 3, where x=0–0.1, have been formed at low temperatures (∼850 °C) by decomposition of Y(Cr 1− x Mg x )O 4 which crystallizes at ∼600 °C from amorphous materials prepared by the hydrazine method. Y(Cr 1− x Mg x )O 3 powders consisting of submicrometer-size particles are sinterable; dense ceramics can be fabricated by sintering for 4 h at 1800 °C under atmospheric pressure. The relative densities, grain sizes, and electrical conductivity increase with increased Mg 2+-content. Y(Cr 0.9Mg 0.1)O 3 ceramics show a good electrical conductivity at elevated temperatures.

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