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Chemical Potential Diagrams for Rare Earth‐Transition Metal‐Oxygen Systems: I, Ln‐V‐O and Ln‐Mn‐O System
Author(s) -
Yokokawa Harumi,
Sakai Natsuko,
Kawada Tatsuya,
Dokiy Masayuki
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb06567.x
Subject(s) - ionic radius , chemical stability , rare earth , manganese , transition metal , oxygen , ternary operation , vanadium , ionic bonding , chemistry , thermodynamics , metal , inorganic chemistry , materials science , mineralogy , ion , metallurgy , physics , biochemistry , organic chemistry , computer science , programming language , catalysis
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 (α A /α B ) vs log ( P (O 2 )). 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.