Raman & Infrared Study of Bi Filled Co4Sb12

Raut, Krushna Kumari and Bali, Ashoka and Mallik, Ramesh Chandra (2012) Raman & Infrared Study of Bi Filled Co4Sb12. In: 56th DAE-Solid State Physics Symposium (SSPS), DEC 19-23, 2011 , SRM Univ, Kattankulathur, INDIA, pp. 855-856.

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Abstract

CoSb3 skutterudites are established thermoelectric materials in the 500-800K temperature range. Undoped and Bi filled CoSb3 samples were synthesized by induction melting-annealing process and phase confirmation done by X-Ray diffraction. The role of bismuth as a filler in CoSb3 was investigated by Raman and far infrared reflectance study. It was found that bismuth strengthens Sb vibrations, and can potentially scatter Sb related acoustic phonons effectively. As a result substantial reduction in thermal conductivity may be possible with proper control of Bi filling.

Item Type:	Conference Proceedings
Series.:	AIP Conference Proceedings - 1447
Publisher:	AMER INST PHYSICS
Additional Information:	Copyright for this article belongs to the American Institute of Physics
Keywords:	thermoelectric;induction melting;Raman;infrared;phonon
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Nov 2012 08:43
Last Modified:	29 Nov 2012 08:51
URI:	http://eprints.iisc.ac.in/id/eprint/45121

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