Transport Properties of Ni and PbTe Under Pressure
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Abstract
The high-pressure transport properties have been determined for nickel and PbTe. Nickel shows a reduction in electrical resistivity, an increase in thermal conductivity, and a variable effect on the Seebeck coefficient with pressure. In PbTe, a dramatic decrease in resistivity and a slow increase in thermal conductivity have been observed with increasing pressure. The three transport properties in PbTe are affected by a pressure-induced structural phase transition. The measurements show that the high-pressure phase is likely a more effective thermoelectric material than the ambient-pressure phase.
Keywords
High pressure thermoelectrics lead telluride nickelPreview
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Notes
Acknowledgements
Work at UNLV was supported by DOE Cooperative Agreement DE-FC52-06NA27684. The authors would like to thank Amadeo Sanchez, James Norton, and William O’Donnell of UNLV for their assistance with the development of the apparatus. The authors would also like to thank Dr. Clay Crow of the UNLV Geoscience Department for the almandine garnet sample used in this work. M.K.J. would like to thank Lars Ehm of the Mineral Physics Institute at Stony Brook for helpful comments and edits. The authors thank two anonymous reviewers for their helpful comments.
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