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説明:

We report on a study of bulk SiGe-MnTe composites obtained via spark plasma sintering of mixed powders
composed of SiGe that was fabricated by mechanical alloying and MnTe prepared via solid-state reaction. The presence of MnTe in the SiGe matrix led to an increase in the electrical conductivity by ~ 50 % and a decrease in the lattice thermal conductivity of the samples by ~ 28 %, while the Seebeck coefficient was reduced from 252 μV K-1 to 197 μV K-1 at 1000 K. As a result, the peak zT of 0.75 was obtained for pristine Si80Ge20B2, and 0.8 for Si80Ge20B2 + 4 wt% MnTe at 1000 K.

権利情報:

• In Copyright
  

キーワード: thermoelectric

刊行年月日: 2023-12-14

出版者: Elsevier BV

掲載誌:

• Materials Letters (ISSN: 0167577X) vol. 357 135746

研究助成金:

• Japan Science and Technology Agency
• Russian Science Foundation 21-12-00405
• JST-Mirai Program JPMJMI19A1

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.4819

公開URL: https://doi.org/10.1016/j.matlet.2023.135746

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更新時刻: 2024-10-10 08:30:09 +0900

MDRでの公開時刻: 2024-10-10 08:30:10 +0900