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Thermopower composition dependence in ferrospinels
Authors:CC Wu  S Kumarakrishnan  TO Mason
Institution:Northwestern University, Department of Materials Science and Engineering, Evanston, Illinois 60201 USA
Abstract:The composition dependence of thermoelectric power (Seebeck coefficient) in ferrospinels with fixed valence foreign cations has been calculated via combined small polaron and cation distribution models. Satisfactory agreement with experimental data is achieved assuming cation distribution thermodynamic constants to be independent of foreign cation concentration. Data are analyzed for a trivalent foreign cation (Al3+) at elevated temperature and for divalent foreign cations (Ni2+, Mg2+, Zn2+) at lower temperatures.
Keywords:Address correspondence to: Professor T  O  Mason  Northwestern University  Dept  of Materials Science & Engineering  The Technological Institute  Evanston  IL 60201  
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