ELECTRICAL PROPERTIES AND CATION VALENCIES IN Mn//3O//4.

S. E. Dorris, Thomas O Mason

Research output: Contribution to journalArticle

159 Citations (Scopus)

Abstract

The electrical conductivity and thermopower of Mn//3O//4 were measured in the temperature range 920 degree to 1530 degree C. Electrical conduction in cubic Mn//3O//4 is explained by the small polaron hopping of electron holes between Mn**4** plus and Mn**3** plus on octahedral sites. The concentrations of Mn**4** plus and Mn**3** plus are governed by the disproportionation equilibrium 2Mn//o//c//t**3** plus reversible reaction Mn//o//c//t**4** plus plus Mn//o//c//t**2** plus . This model also explains the electrical behavior of NiMn//2O//4 and CuMn//2O//4.

Original languageEnglish
Pages (from-to)379-385
Number of pages7
JournalJournal of the American Ceramic Society
Volume71
Issue number5
Publication statusPublished - May 1988

ASJC Scopus subject areas

  • Ceramics and Composites

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