Thermal Conductivity of Bismuth-Antimony Alloy Single Crystals
Thermal Conductivity of Bismuth-Antimony Alloy Single Crystals
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DOI：
10.1143/jpsj.25.1054
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发表时间：
1968-10
影响因子：
1.7
通讯作者：
T. Yazaki
中科院分区：
文献类型：
--
作者：
T. Yazaki
在77°K ~ 300°K温度范围内，同时测量了不同取向的Bi 97 Sb 3和Bi 90 Sb 10合金单晶的绝对塞贝克系数、电阻率和热电优值。在价带和导带都是三个独立谷带的假设下，计算了电子热导率。它们是各向异性的，较大的值是垂直于三角轴的值。在3at.%锑合金，平行于和垂直于三角轴的总热导率几乎是恒定的（K|| =50±5 mW/cm·deg和K_（max）=75±5 mW/cm·deg）。在10at.%锑合金，它们中的每一个都随着温度逐渐增加。在所研究的温度范围内，这两种合金中的大部分热量似乎都是通过载流子传递的。
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±5 mW/cm·deg and K ⊥ =75±5 mW/cm·deg) between 77°K and 300°K. In the 10 at.% antimony alloy, each of them gradually increase with temperature. It seems that most of heat are transported by carriers in the studied temperature range in both alloys.