Publication
Journal of Solid State Chemistry
Paper

The influence of oxygen activity on T, T′, and T* phase stabilities in (La,RE)2CuO4 systems

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Abstract

The effect of oxygen activity on the formation of (La,RE)2CuO4 (RE = rare earth) solid-solutions has been investigated. Compositions from the (La,Nd)2CuO4 and (La,Dy,M)2CuO4 (M = Ce, Th) systems, for example, can be prepared in either the T and T′ or T* and T′ structure types, respectively, at different oxygen contents but identical cation stoichiometries, thereby considerably extending the stability field of each structure. These results in part explain some of the differences in several published "equilibrium" phase diagrams for the (La,Nd)2CuO4 system. © 1990.

Date

01 Jan 1990

Publication

Journal of Solid State Chemistry

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