[21a-C102-1~11] 9.4 Thermoelectric conversion

[21a-C102-11] Measurement of the Thomson coefficient in sintered Bi₂Te₃ thermoelectric materials

〇Yasutaka Amagai¹, Takeshi Shimazaki¹, Kenjiro Okawa¹, Tatsuya Kawae², Norihiko Sakamoto¹, Hiroyuki Fujiki¹, Nobu-Hisa Kaneko¹ (1.AIST, 2.Kyusyu Univ.)

Keywords:Thermoelectric effect, Thermoelectric material, Material characterization

We proposed a novel method to address the inevitable heat loss in the Thomson coefficient measurement, where most of the radiative heat loss that occurs during the measurement of Joule and Thomson heats can be compensated for by calculating the ratio of the two signals. Herein, the Thomson coefficient of the sintered Bi₂Te₃ thermoelectric materials are directly measuerd with the propsed technque . We have successfully measured the Thomson heating and cooling when the polarity of the dc current is reversed from negative to posive.