Chemical Potential Diagrams for Rare Earth‐Transition Metal‐Oxygen Systems: I, Ln‐V‐O and Ln‐Mn‐O System

Harumi Yokokawa, Natsuko Sakai, Tatsuya Kawada, Masayuki Dokiy

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The thermodynamic properties of double oxides in rare earth‐transition metal (V and Mn)‐oxygen ternary systems have been collected and evaluated to examine their stability using chemical potential diagrams plotted as log (αAB) vs log (P(O2)). The thermodynamic regularities of perovskites, pyrochlores, and other compounds have been discussed in terms of the effective ionic radii across a series of rare earths. The obtained regularities have been used to estimate tentatively the thermodynamic properties of some rare‐earth vanadium and manganese oxides.

Original languageEnglish
Pages (from-to)649-658
Number of pages10
JournalJournal of the American Ceramic Society
Volume73
Issue number3
DOIs
Publication statusPublished - 1990 Mar
Externally publishedYes

Keywords

  • manganese
  • oxygen
  • phase diagrams
  • rare earths
  • vanadium

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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