Influence of Cr-Substitution on the Electrical Properties [-3pt] of Fe1-xCrxVSbO6

H. Dudaa, E. Filipekb, G. Dąbrowskab, T. Grońa and T. Mydlarzc aUniversity of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland bWest Pomeranian University of Technology, Szczecin, Department of Inorganic and Analytical Chemistry, al. Piastów 42, 71-065 Szczecin, Poland cInternational Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka 95, 53-529 Wrocław, Poland

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Fe1-xCrxVSbO6 solid solution is semiconductor with the activation energy decreasing both in the intrinsic and extrinsic conductivity temperature regions as the Cr-content increases. The n-type conduction is observed for Fe-richer samples while a change of the Seebeck coefficient (from n to p) - for Cr-richer ones. Magnetic isotherms for all samples of solid solution under study are characteristic of the universal Brillouin function, indicating paramagnetic response. These effects are discussed within the framework of the appearance of the mixed valence of both Fe and Cr ions.

DOI: 10.12693/APhysPolA.124.833 PACS numbers: 72.20.Pa, 72.80.Ga, 75.20.-g