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Lattice Thermal Conductivities of Yb(Cd<sub>1-<i>x</i></sub>Mg<sub><i>x</i></sub>)<sub>2</sub>Sb<sub>2</sub> Analyzed via Debye-Callaway Model
Debye-Callaway 모델 기반 Yb(Cd1-xMgx)2Sb2 열전 합금의 격자 열전도도 분석
Minsu Heo, Seung-Hwan Kwon, Won-Seon Seo, Sang-il Kim, Hyun-Sik Kim
허민수, 권승환, 서원선, 김상일, 김현식
Korean J. Met. Mater. 2023;61(8):608-615.   Published online 2023 Jul 24
DOI: https://doi.org/10.3365/KJMM.2023.61.8.608

YbCd2Sb2-based Zintl phases have been identified as promising materials for thermoelectric applications due to their high Seebeck coefficient and electrical conductivity. However, their high thermal conductivity limits their overall thermoelectric performance. To address this, Mg has recently been introduced as an alloying element at Cd atomic sites to reduce the..... More

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Approaches to Estimate the Magnitude of Phonon Scattering via Point Defects in Mo(Se<sub>1-x</sub>Te<sub>x</sub>)<sub>2</sub> Thermoelectric Alloys
Mo(Se1-xTex)2 열전합금의 점 결함에 의한 포논 산란 효과 분석
You-Jong Lee, Sang-il Kim, Seong-Mee Hwang, Jeong-Yeon Kim, Won-Seon Seo, Hyun-Sik Kim
이유종, 김상일, 황성미, 김정연, 서원선, 김현식
Korean J. Met. Mater. 2023;61(1):38-45.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.38

One of the most popular routes used to improve the thermoelectric performance of materials is to suppress their lattice thermal conductivities. Thermoelectric performance is characterized by a figure-of-merit zT, which is defined as σS2T/(κe + κl), where the σ, S, T, κe, and κl are the electrical conductivity, Seebeck coefficient,..... More

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