[24p-E205-1~18] 9.4 Thermoelectric conversion

[24p-E205-7] Thermoelectric and magnetic properties of 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

In order to avoid the problem caused by the difference in thermal expansion coefficient between devices, which is a concern in high temperature thermoelectric power generation, it is desirable to fabricate pn devices in the same matrix phase. In this work, we focused on Nd_1-xSr_xFeO_3-δ and tried to develop both pn and n-type thermoelectric performance by controlling the spin state of Fe³⁺. p-type thermoelectric performance was confirmed for x≤0.5 and n-type thermoelectric performance for x≥0.6, which will be discussed in terms of crystal structure, thermoelectric and magnetic properties in this talk.