논문 해외 국제전문학술지(SCI급) Thermoelectric Properties of Non-Stoichiometric MnTe Compounds
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2013-07
- 저자명 오민욱
- 학술지명 Electronic Materials Letters
- 발행처명 대한금속·재료학회
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
홈페이지논문 초록 (Abstract)
Non-stoichiometric MnxTe1-x (x = 0.48-0.52) has been prepared by a melt-quench process followed by sparkplasma-sintering to investigate its thermoelectric properties. Polycrystalline MnxTe1-x with x > 0.51 has a nearly single MnTe phase. The measured Seebeck coefficient and electrical conductivity show a similar trend, in which a transition occurs near 473 K with increasing temperature. The thermal conductivity of MnxTe1-x compounds shows a tendency to decrease with increasing Mn content. Along with a low thermal conductivity and a high power factor, the samples with x > 0.51 have a high figure of merit, which reaches 0.41 at 773 K. The results indicate that production of a homogenous MnTe single phase is an effective way to improve the thermoelectric properties of p-type non-stoichiometric MnxTe1-x compounds