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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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Official URL: http://dx.doi.org/10.1063/1.4710272


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
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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