Seebeck Coefficient of Cation-Substituted Disulfides CuCr1−xFe x S2 and Cu1−xFe x CrS2
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The effect of cation substitution on the Seebeck coefficient of CuCr1−xFe x S2 (x = 0 to 0.30) and Cu1−xFe x CrS2 (x = 0 to 0.03) in the temperature range of 100 K to 450 K has been investigated. Increasing iron concentration led to a metal–insulator transition which suppressed the thermoelectric power. However, for low iron concentration (x < 0.03), the Seebeck coefficient of CuCr1−xFe x S2 and Cu1−xFe x CrS2 exceeded the values for the undoped copper-chromium disulfide matrix CuCrS2 at temperature below 300 K.
KeywordsThermoelectric power Seebeck coefficient cation-substituted disulfides quantum-chemical calculations
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The authors are grateful to Ph.D. Sokolov V.V. (NIIC SB RAS) for assistance in carrying out the synthesis and characterization of the samples studied. The reported study was funded by RFBR according to Research Project No. 16-032-00612_mol_a.
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