The Thermoelectric Properties of AgSbTe_2-AgBiTe_2, AgSbTe_2-PbTe and-SnTe Systems

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Thermoelectric properties of AgSbTe_2-AgBiTe_2, AgSbTe_2-PbTe and -Snte systems are studied. In these alloys and also in AgSbTe_2, when prepared by the usual method of zone melting, the thermoelectric power and the electrical conductivity vary along the length of the bar and the mode of the variation strongly depends on the speed of zone passing. These facts are probably related to the mode of precipitation of Ag_2Te or Sb_2Te_3. The Hall mobility of AgSbTe_2 which does not contain the precipitates of Ag_2Te has been found to change with the absolute temperature with an exponent of -0.7 and -1.3 for two specimens respectively. In AgSbTe_2-AgBiTe_2 and-PbTe systems, the electrical conductivity decreases and the thermoelectric power increases with the increase of AgBiTe_2 or PbTE content. In AgSbTe_2SnTe system, the electrical conductivity increases and the thermoelectric power decreases with the increase of AgBiTe_2 content in AgSbTe_2-AgBiTe_2 system while it has a broad minimum in the range of PbTe content from 20 to 60 atomic percent in AgSbTe_2-PbTe system. In AgSbTe_2-SnTe system, the lattice thermal conductivity increases with the increase of SnTe content.
社団法人応用物理学会の論文
1963-02-15