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Structural Investigation and Indium Substitution in the Thermoelectric Mn2.7Cr0.3Si4Al2-xInx Series

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Title: Structural Investigation and Indium Substitution in the Thermoelectric Mn2.7Cr0.3Si4Al2-xInx Series
Authors: Barbier, Tristan Browse this author
Combe, Emmanuel Browse this author
Funahashi, Ryoji Browse this author
Takeuchi, Tomonori Browse this author
Kubouchi, Masataka Browse this author
Miyazaki, Yuzuru Browse this author
Guilmeau, Emmanuel Browse this author
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Keywords: Thermoelectric
silicide compounds
single crystals
x-ray diffraction
Issue Date: Mar-2016
Publisher: Springer
Journal Title: Journal of electronic materials
Volume: 45
Issue: 3
Start Page: 1992
End Page: 1999
Publisher DOI: 10.1007/s11664-016-4365-0
Abstract: Following the recent discovery of the promising Mn2.7Cr0.3Si4Al2 thermoelectric compound (having, e.g., automotive, industrial, and solar conversion applications), structural characterization by x-ray single-crystal diffraction analysis has been performed. This layered material is composed of two distinct crystallographic sites where both (Mn, Cr) and (Al, Si) are randomly distributed. The deduced crystallographic parameters were then confirmed by powder x-ray diffraction analysis through a temperature dependence of the phase stability, showing at the same time chemical stability up to 873 K. Taking into account the two distinct crystallographic sites highlighted, samples possessing two guest elements, one on each site, were then synthesized to improve the thermoelectric properties. A solid solution is found in the system Mn2.7Cr0.3Si4Al2-xInx with x varying from 0 to 0.2. Thus, double-substituted samples were studied by x-ray diffraction, electrical, and thermal measurements. The present paper describes and discusses the experimental results obtained.
Rights: The final publication is available at Springer via
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鈴木 亮輔

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