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In situ measurement of electrical resistivity and Seebeck coefficient simultaneously at high temperature and high
Bao Yuan1, Qiang Tao1, Xueping Zhao1
1State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China.
Abstract:
A method for performing simultaneous measurements of the electrical resistivity and the Seebeck coefficient at high pressure and high temperature (HPHT) in cubic multi-anvil apparatus is described. For high pressure and high temperature measurements, a four-probe arrangement is used to measure the electrical resistivity and two pairs of chromel-alumel type thermocouples are employed to determine the Seebeck coefficient, respectively. Results of an expected temperature-induced phase transition, pressure-induced metallization and enhancement of the thermoelectric properties were obtained in Ag2Te. This method can provide the necessary data of thermoelectric materials at HPHT.
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