Detection of large thermal vibration for Cu atoms in tetrahedrite by high-angle annular dark-field imaging

Mishra, Tara Prasad and Koyano, Mikio and Oshima, Yoshifumi (2017) Detection of large thermal vibration for Cu atoms in tetrahedrite by high-angle annular dark-field imaging. In: APPLIED PHYSICS EXPRESS, 10 (4).

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Abstract

Tetrahedrite (Cu12Sb4S13) is a new type of thermoelectric material with an extremely low thermal conductivity attributed to the anomalous large thermal vibration of specific Cu sites. The tetrahedrite crystal was observed from the 111] direction by high-angle annular dark-field (HAADF) imaging and the image intensity was found to be 64% lower at specific sites. This could be explained by the blurring of the intensity distribution owing to a large atomic displacement, suggesting that anomalous large thermal vibrations at specific sites in the crystal can be distinguished in HAADF images. (C) 2017 The Japan Society of Applied Physics

Item Type:	Journal Article
Publication:	APPLIED PHYSICS EXPRESS
Publisher:	IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Additional Information:	Copy right for this article belongs to the IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 May 2017 04:32
Last Modified:	20 May 2017 04:32
URI:	http://eprints.iisc.ac.in/id/eprint/56862

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