[21p-C102-1~17] 9.4 Thermoelectric conversion

[21p-C102-16] Crystal and magnetic structures and thermoelectric properties for
Nd_1-xSr_xFeO_3-δ (0.1≤x≤0.9)

〇Yudai Kamatani¹, Hiroshi Nakatsugawa¹, Yoichi Okamoto², Charles H.Hervoches³ (1.Yokohama National Univ., 2.National Defense Academy, 3.Nuclear Physics Inst.)

Keywords:oxide

Oxide thermoelectric materials are chemically stable at high temperatures, have low toxicity, and are inexpensive. Among them, perovskite-type Fe oxides are expected to have high p- and n-type thermoelectric performance in the same matrix phase according to Heikes' formula. In this study, we focused on Nd1-xSrxFeO3-δ and evaluated its crystal and magnetic structures and thermoelectric properties. The crystal and magnetic structures were identified by Rietveld analysis of neutron diffraction data at 10-15 K, 300 K, and 500 K.