[16p-WL2_401-1~15] 9.4 Thermoelectric conversion

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-WL2_401-8] Fabrication and Thermal Conductivity Evaluation of Epitaxial Mg₃(Sb, Bi)₂ Thin Films

〇Akito Ayukawa¹, Takeru Kuriyama¹, Kouki Nejo¹, Tomohiro Iwashita¹, Yuichiro Yamashita², Haruhiko Udono¹, Shunya Sakane¹ (1.Ibaraki Univ., 2.AIST)

Keywords:

Thermoelectric materials,Mg3(Sb,Bi)2,Epitaxial growth

Recently, Mg₃(Sb, Bi)₂-based materials have attracted significant attention due to their excellent thermoelectric properties near room temperature. Compared to the end-member compounds, Mg₃Sb₂ and Mg₃Bi₂, the Mg₃(Sb, Bi)₂ alloy system is expected to exhibit reduced thermal conductivity resulting from the alloy scattering of phonons. However, this effect has yet to be verified in epitaxial thin films. In this study, we aimed to fabricate Mg₃(Sb, Bi)₂ alloy thin films using molecular beam epitaxy and to evaluate their crystal structures and thermoelectric properties.