Electrical conductivity and thermoelectric power of alloys in the As-Te and As40-xTe60-yInx+y molten systems
Electrical conductivity and thermoelectric power of alloys in the As-Te and As40-xTe60-yInx+y molten systems
复制标题
As-Te 和 As40-xTe60-yInx y 熔融体系中合金的电导率和热电势
DOI：
10.1088/0022-3719/8/4/015
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发表时间：
1975
期刊：
影响因子：
--
通讯作者：
A. Oberafo
中科院分区：
文献类型：
--
作者：
A. Oberafo
实验研究了As-Te和As_（40）-xTe_（60）-yInx+y熔融体系的电导率和热电势随组分和温度的变化。对于As-Te系统，电导率sigma是砷含量在5-55原子百分比范围内的连续且递减的函数;而热电功率是砷含量在15-55原子百分比范围内的连续且递增的函数。电导率的温度系数，d σ/dT，是积极的所有研究的合金。就在这些合金的熔点以上，在随As含量增加而增加的温度范围内，导电活化能是恒定的并且与组合物无关。此后，活化能随温度降低。热电功率S的行为与上面讨论的电导率的行为一致。添加少量的铟以取代As 2 Te 3中的砷或碲会导致电导率降低。
Experimental investigation has been made of the variation of electrical conductivity and thermoelectric power with composition and temperature in the As-Te and As40-xTe60-yInx+y molten systems. For the As-Te system, the electrical conductivity, sigma , is a continuous and decreasing function of the arsenic content over the range 5-55 atomic per cent arsenic; while the thermoelectric power is a continuous and increasing function of the arsenic content over the range of 15-55 atomic per cent arsenic. The temperature coefficient of conductivity, d sigma /dT, is positive for all investigated alloys. Just above the melting points of these alloys, in a temperature range which increases with increasing As content, the conductivity activation energy is constant and independent of composition. Thereafter, the activation energy decreases with temperature. The behaviour of the thermoelectric power, S, is consistent with the behaviour of the electrical conductivity discussed above. Additions of small quantities of indium to replace either arsenic or tellurium in As2Te3 lead to a decrease in conductivity.