[11a-E206-1~11] 13.2 Exploratory Materials, Physical Properties, Devices

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[11a-E206-7] Decomposition mechanism of epitaxial Mg₃Bi₂ thin films under atmospheric conditions

〇Shunya Sakane¹, Tomohiro Iwashita¹, Akito Ayukawa¹, Takeru Kuriyama¹, Koki Nejo¹, Dai Inoue¹, Hitoshi Abe¹, Haruhiko Udono¹ (1.Ibaraki Univ.)

Keywords:

Zintl-phase compounds,Thermoelectric conversion,Nanostructure

Mg₃Bi₂ is a trigonal Zintl-phase semimetal that shows high thermoelectric performance near room temperature. However, its instability in air is known to degrade this performance. This study investigates the decomposition mechanism of epitaxial Mg₃Bi₂ thin films grown by molecular beam epitaxy through detailed structural analysis.