Thermal Conductivity of Bismuth-Antimony Alloy Single Crystals
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概要
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The absolute Seebeck coefficient, electrical resistivity, and thermoelectric figure of merit have simultaneously measured on Bi_<97>Sb_3 and Bi_<90>Sb_<10> alloy single crystals of various orientations between 77°K and 300°K. Under the assumption of independent three valley bands for both the valence and conduction bands, the electronic thermal conductivities have been calculated. They are anisotropic and the larger values being those perpendicular to the trigonal axis. In the 3 at.% antimony alloy, the total thermal conductivities both parallel and perpendicular to the trigonal axis are practically constant (K_‖=50±5mW/cm・deg and K_⊥=75±5mW/cm・deg) between 77°K and 300°K. In the 10 at.% antimony alloy, each of them graduall increase with temperature. It seems that most of heat are transported by carriers in the studied temperature range in both alloys.
- 社団法人日本物理学会の論文
- 1968-10-05