Ion conductivity in cubically-stabilized fluorite-like structured Er₅CeMoO_12.5 and Yb₅MMoO_12.5 (M = Ce, Zr) solid solutions

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• 作者：Daniel Schildhammer^a ; Gerda Fuhrmann^a ; Lucas Petschnig^a ; Michaela Kogler^b ; Simon Penner^b ; Nikolaus Weinberger^c ; Herwig Schottenberger^a ; Hubert Huppertz^a ; ^{hubert.huppertz@uibk.ac.at}
• 关键词：Cubic rare earth molybdenum oxides ; Solution combustion ; Fluorite structure ; Ion conductivity
• 刊名：Solid State Sciences
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：62
• 期：Complete
• 页码：22-28
• 全文大小：998 K
• 卷排序：62

文摘

Ytterbium and erbium molybdenum oxides in a cubic structure were realized by partial substitution with Ce4+ and Zr4+. Novel fluorite like structures of Er5CeMoO12.5 and Yb5MMoO12.5 (M = Ce, Zr) were determined by Rietveld refinements. Low bulk and grain boundary activation energies in the same range as 8-YSZ were determined by EIS. Ion conductivity in these new materials can be attributed to the oxygen vacancies present in the defect fluorite structure.