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Thermoelectric properties of Cr-doped higher manganese silicides prepared using spark plasma sintering

Published online by Cambridge University Press:  12 February 2018

Tomoyuki Nakamura ,
Kentaro Yoshioka ,
Ryuichi Arai ,
Jun-ichi Nishioka ,
Mikiyasu Hirakawa ,
Kenjiro Fujimoto ,
Ryuji Tamura  and
Keishi Nishio
Tomoyuki Nakamura*
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-Ku, Tokyo, 125-8585Japan SWCC Showa Cable Systems Co., Ltd., 4-1-1 Minami-Hashimoto Chuo-Ku Sagamihara-shi, Kanagawa-ken, 252-0253Japan
Kentaro Yoshioka
Affiliation:
SWCC Showa Cable Systems Co., Ltd., 4-1-1 Minami-Hashimoto Chuo-Ku Sagamihara-shi, Kanagawa-ken, 252-0253Japan
Ryuichi Arai
Affiliation:
SWCC Showa Cable Systems Co., Ltd., 4-1-1 Minami-Hashimoto Chuo-Ku Sagamihara-shi, Kanagawa-ken, 252-0253Japan
Jun-ichi Nishioka
Affiliation:
SWCC Showa Cable Systems Co., Ltd., 4-1-1 Minami-Hashimoto Chuo-Ku Sagamihara-shi, Kanagawa-ken, 252-0253Japan
Mikiyasu Hirakawa
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-Ku, Tokyo, 125-8585Japan
Kenjiro Fujimoto
Affiliation:
Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, 287-8510Japan
Ryuji Tamura
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-Ku, Tokyo, 125-8585Japan
Keishi Nishio
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-Ku, Tokyo, 125-8585Japan
*
*(Email: t.nakamura095@cs.swcc.co.jp)
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Abstract

Cr-doped higher manganese silicides (HMSs) (Mn1-xCrx)Si1.75 (x = 0–0.35) have been prepared by repeated sintering from raw elemental powder using spark plasma sintering. The a- and cMn-axis length increases with increasing Cr content x. The results of powder X-ray diffraction and microstructural observation suggest that impurity phases, e.g. (Mn, Cr)Si and CrSi2, exist in the samples with x = 0.20 or above. The electrical resistivities and Seebeck coefficient decrease with increasing Cr content x. The Cr content x of 0.10 indicated the largest power factor at 850 K (1.39×10-3W/mK), followed in order by x of 0.25, 0, 0.05, 0.15, 0.20. To confirm the effect of Cr-doping on outputs of modules, two paired p-n modules consisting of n-type purchased Mg2Si and p-type Cr-doped HMS with x = 0, 0.05, 0.10, and 0.20 elements were prepared. The module consisting of (Mn0.9Cr0.1)Si1.75 showed the highest output, that is, 845 mW at 873 K on the hot side. There was approximately 8% improvement compared with that of the module consisting of Cr-free elements.

Keywords

electrical propertiesthermoelectricthermoelectricity
Type
Articles
Information
MRS Advances , Volume 3 , Issue 24: Energy and Sustainability , 2018 , pp. 1367 - 1372
Copyright
Copyright © Materials Research Society 2018 

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References

REFERENCES

Ponnambalam, V. and Morelli, D. T., J. Electron. Mater. 41 (2012) 1389–1394.Google Scholar
Liu, G., Lu, Q., Zhang, X., Zhang, J. and Shi, Y., J. of Electron. Mater. 41 (2012) 1450–1455.Google Scholar
Kikuchi, Y., Miyazaki, Y., Saito, Y., Hayashi, K., Yubuta, K. and Kajitani, T., J. J. of Appli. Phys. 51 (2012) 085801.CrossRefGoogle Scholar
Shin, D. K., Ur, S. C., Jang, K. W. and Kim, I. H., J. of electron. Mater. 43 (2014) 2104–2108.Google Scholar
Miyazaki, Y., Igarashi, D., Hayashi, K., Kajitani, T., and Yubuta, K., Phys. Rev. B 78 (2008).Google Scholar
Navone, C., Baffie, T., Granger, G. B., Simon, J., Soulier, M., Romanjek, K., Leforestier, J., Salavador, V. and Aixala, L., TMS 2015 144th Annual Meeting & Exhibition pp 613–621.Google Scholar
Skomedal, G., Holmgren, L., Middleton, H., Eremin, I. S., Isachenko, G. N., Jaegle, M., Taratik, K., Vlachos, N., Manoli, M., Kyratsi, T., Berthebaud, D., Truong, N. Y. D. and Gascoin, F., Energy Conversion and Management 110 (2016) 13–21.CrossRefGoogle Scholar
Hu, X., Jood, P., Ohta, M., Kunii, M., Nagase, K., Nishiate, H., Kanatzidis, M. G. and Yamamoto, A., Energy Environ. Sci. 9 (2016) 517–529.CrossRefGoogle Scholar