Samanta, K. and Gupta, N. and Kaur, H. and Sharma, L. and Pandey, S. Dogra and Singh, J. and Senguttuvan, T. D. and Sharma, N. Dilawar and Bandyopadhyay, A. K. (2015) Order-disorder transition and Fano-interference in thermoelectric Cu3SbSe3 nanoparticles. Materials Chemistry and Physics, 151. 99-104. ISSN 0254-0584

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Abstract

Temperature dependent Raman scattering measurements were carried out to investigate the phonon behavior of thermoelectric Cu3SbSe3 nanoparticles. The anomalous behavior of phonon mode (A(g)) frequency with temperature indicates the possibility of a lattice instability related to the order disorder structural transition at 380 K. In the low temperature region (80-250 K) we found an asymmetric line shape of A(g) mode, which is analyzed and discussed in the light of phonon continuum Fano-interference effect. We have obtained the thermal conductivity (K) similar to 2.04 W/mK at room temperature. The change in thermal conductivity with temperature strongly correlates with the change in total anharmonicity of the Cu3SbSe3 lattice.

Item Type:	Article
Uncontrolled Keywords:	Thermoelectric effect Raman spectroscopy and scattering Phase transition
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	06 Oct 2016 06:00
Last Modified:	06 Oct 2016 06:00
URI:	http://npl.csircentral.net/id/eprint/1935

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