[12p-PA4-1~20] 9.4 Thermoelectric conversion

[12p-PA4-6] Thermoelectric properties in perovskite type oxides Sm_1-xSr_xFeO₃

〇Hiroshi Nakatsugawa¹, Syunta Kazama¹, Miwa Saito², Yoichi Okamoto³ (1.Yokohama Nat. Univ., 2.Kanagawa Univ., 3.Nat. Def. Acad.)

Keywords:thermoelectric materials, oxides

Oxide has long been attracting attention as a candidate for high-temperature thermoelectric materials. Perovskite Fe oxides are expected to have P-type and N-type thermoelectric characteristics similar to those for estimating the Seebeck coefficient in the high temperature limit based on the Heikes’ formula. In this study, we focused on Sm_1-xSr_xFeO₃ whose crystal structure was stable in the whole composition range, and we have developed the possibility of developing high temperature thermoelectric materials composed of PN elements with oxide as the same matrix.