The harman method was applied to measure thermal conductivity k of thermoelectric materials, and the reliability of the measured k was investigated. The quantitative k requires a highly sensitive technique to measure minute Peltier heat. Temperature difference by Peltier heat pumping was successfully measured by developing the DC method of resistance measurement. k of n-type Bi_2 Te_3 sintered compactt and n-type PbTe boules was measured at 295K by the harman method. Static comparative method was lso a;;oed to obtain the standard vaue of k. In the case of B_(i2)STe_3, the k by the harman method agreed well with the standard value. In the case of PbTe in the electron concentration n_3 range <5X10~(24)/m~3, the k almost agreed with the standard value. however, PbTe in the N_e range >=1 x 10~(25)/m~3 showed a larger k than the standard value. The harman method has an error to give the large k for the material with a large carrier compoonent k_3 of k. This error is due to the fast conduction of Peltier heat by the carrier. The reliable k can be measured for the material with a small k_e.
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机译：应用哈曼法测量热电材料的导热系数k，并研究了所测k的可靠性。定量k需要一种高度敏感的技术来测量帕尔帖热。通过开发直流电阻测量方法，成功地测量了珀耳帖热泵的温差。通过harman方法在295K下测量了n型Bi_2 Te_3烧结压块和n型PbTe块的k。静态比较法也可以得到k的标准值。在B_（i2）STe_3的情况下，通过harman方法得出的k与标准值非常吻合。在电子浓度n_3范围<5X10〜（24）/ m〜3的PbTe中，k几乎与标准值一致。但是，N_e范围> = 1 x 10〜（25）/ m〜3的PbTe的k大于标准值。 harman方法有一个误差，即对于带有较大k的载体组分k_3的材料给出较大的k。此错误归因于载体对珀耳帖热的快速传导。对于k_e小的材料，可以测量可靠的k。
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