[8p-Z18-1~16] 9.4 Thermoelectric conversion

[8p-Z18-16] Anomalous Nernst Effect in Iron- based sintered alloys

〇Yasutomo Omori¹, Yuma Iwasaki¹, Ryohto Sawada¹, Sadanori Kuroshima¹, Masahiko Ishida¹, Akihiro Kirihara¹ (1.NEC)

Keywords:Thermoelectric conversion, Magnetic material, Anomalous Nernst Effect

Recently, the Anomalous Nernst Effect (ANE) is attractive as thermoelectric conversion. We have studied the electromotive force of the ANE in iron based sintered alloys. We prepared Fe-Al alloys with different Al concentration by using Spark Plasma Sintering (SPS) technique. The electromotive force of the ANE S_yx has dramatically enhanced with increasing the ratio of Al and showed the maximum when the ratio of Al is 25%. Then we prepared Fe₇₅X₂₅ (X=B, Si, Ga) alloys for the comparison between the effects of different doping elements. Furthermore, to find more efficient ANE materials, we have tried to enhance the electromotive force of Fe₇₅Al₂₅ by adding other elements.