Single crystallization of Ba 8Al xSi 46-x clathrate by using the flux Czochralski method

Yusuke Nakakohara; Naoki Mugita; Yuya Nagatomo; Makoto Saisho; Teruaki Motooka; Ryo Teranishi; Shinji Munetoh

doi:10.1557/opl.2011.1060

Single crystallization of Ba ₈Al _xSi _46-x clathrate by using the flux Czochralski method

Yusuke Nakakohara, Naoki Mugita, Yuya Nagatomo, Makoto Saisho, Teruaki Motooka, Ryo Teranishi, Shinji Munetoh

Advanced Materials Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

We have synthesized single crystalline Ba ₈Al _xSi _x-46 clathrates by using the flux Czochralski (CZ) method with Al-rich melt. The specific electric resistivity, the Seebeck coefficient and the power factor of single crystalline Ba ₈Al ₁₄Si ₃₂ were 0.73 mΩcm, 70.0μV/K and 6.8×10 ^-4V ²/K ²Ωm, respectively. These values are higher than that of single crystalline Ba ₈Al ₁₂Si ₃₄clathrate because of the reduced carrier concentration. It is indicated that Al contents and the carrier concentration of single crystalline Ba ₈Al _xSi _46-x can be controlled by using the flux Czochralski method.

Original language	English
Title of host publication	Energy Harvesting - Recent Advances in Materials, Devices and Applications
Pages	131-135
Number of pages	5
DOIs	https://doi.org/10.1557/opl.2011.1060
Publication status	Published - 2012
Event	2011 MRS Spring Meeting - San Francisco, CA, United States Duration: Apr 25 2011 → Apr 29 2011

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1325
ISSN (Print)	0272-9172

Other

Other	2011 MRS Spring Meeting
Country	United States
City	San Francisco, CA
Period	4/25/11 → 4/29/11

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Nakakohara, Y., Mugita, N., Nagatomo, Y., Saisho, M., Motooka, T., Teranishi, R., & Munetoh, S. (2012). Single crystallization of Ba ₈Al _xSi _46-x clathrate by using the flux Czochralski method. In Energy Harvesting - Recent Advances in Materials, Devices and Applications (pp. 131-135). (Materials Research Society Symposium Proceedings; Vol. 1325). https://doi.org/10.1557/opl.2011.1060

Single crystallization of Ba ₈Al _xSi _46-x clathrate by using the flux Czochralski method. / Nakakohara, Yusuke; Mugita, Naoki; Nagatomo, Yuya; Saisho, Makoto; Motooka, Teruaki; Teranishi, Ryo ; Munetoh, Shinji.

Energy Harvesting - Recent Advances in Materials, Devices and Applications. 2012. p. 131-135 (Materials Research Society Symposium Proceedings; Vol. 1325).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nakakohara, Y, Mugita, N, Nagatomo, Y, Saisho, M, Motooka, T, Teranishi, R & Munetoh, S 2012, Single crystallization of Ba ₈Al _xSi _46-x clathrate by using the flux Czochralski method. in Energy Harvesting - Recent Advances in Materials, Devices and Applications. Materials Research Society Symposium Proceedings, vol. 1325, pp. 131-135, 2011 MRS Spring Meeting, San Francisco, CA, United States, 4/25/11. https://doi.org/10.1557/opl.2011.1060

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abstract = "We have synthesized single crystalline Ba 8Al xSi x-46 clathrates by using the flux Czochralski (CZ) method with Al-rich melt. The specific electric resistivity, the Seebeck coefficient and the power factor of single crystalline Ba 8Al 14Si 32 were 0.73 mΩcm, 70.0μV/K and 6.8×10 -4V 2/K 2Ωm, respectively. These values are higher than that of single crystalline Ba 8Al 12Si 34clathrate because of the reduced carrier concentration. It is indicated that Al contents and the carrier concentration of single crystalline Ba 8Al xSi 46-x can be controlled by using the flux Czochralski method.",

author = "Yusuke Nakakohara and Naoki Mugita and Yuya Nagatomo and Makoto Saisho and Teruaki Motooka and Ryo Teranishi and Shinji Munetoh",

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AU - Nakakohara, Yusuke

AU - Mugita, Naoki

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AU - Saisho, Makoto

AU - Motooka, Teruaki

AU - Teranishi, Ryo

AU - Munetoh, Shinji

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N2 - We have synthesized single crystalline Ba 8Al xSi x-46 clathrates by using the flux Czochralski (CZ) method with Al-rich melt. The specific electric resistivity, the Seebeck coefficient and the power factor of single crystalline Ba 8Al 14Si 32 were 0.73 mΩcm, 70.0μV/K and 6.8×10 -4V 2/K 2Ωm, respectively. These values are higher than that of single crystalline Ba 8Al 12Si 34clathrate because of the reduced carrier concentration. It is indicated that Al contents and the carrier concentration of single crystalline Ba 8Al xSi 46-x can be controlled by using the flux Czochralski method.

AB - We have synthesized single crystalline Ba 8Al xSi x-46 clathrates by using the flux Czochralski (CZ) method with Al-rich melt. The specific electric resistivity, the Seebeck coefficient and the power factor of single crystalline Ba 8Al 14Si 32 were 0.73 mΩcm, 70.0μV/K and 6.8×10 -4V 2/K 2Ωm, respectively. These values are higher than that of single crystalline Ba 8Al 12Si 34clathrate because of the reduced carrier concentration. It is indicated that Al contents and the carrier concentration of single crystalline Ba 8Al xSi 46-x can be controlled by using the flux Czochralski method.

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