alexa Composition Dependence of Effective Thermal Conductivit

Research & Reviews: Journal of Material Sciences
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Research Article

Composition Dependence of Effective Thermal Conductivity and Effective Thermal Diffusivity of Se98-XCd2lnx (X=0, 2, 6, 10) Glassy Alloys

Singh K1*, Kumar S2 and Jagjiwanram3

1Department of Physics, School of Physical Science, Jawaharlal Nehru University, India

2Dr. Ram Manohar Lohiya Government Degree College, Inida

3Dyal Singh College, University of Delhi, India

*Corresponding Author:
Singh K
Department of Physics
School of Physical Science
Jawaharlal Nehru University
E-mail: [email protected]

Received: 16/11/2015 Accepted: 05/01/2016 Published: 12/01/2016



Effective thermal conductivity and effective thermal diffusivity of Se98-x Cd2Inx (x=0, 2, 6, 10) chalcogenide glasses were carried out at room temperature using transient plane source (TPS) technique. The measured values of effective thermal conductivity and effective thermal diffusivity were used to determine the specific heat per unit volume (ρCp ) of these glasses in the composition range of investigation. The values of λe and χe were found to increase initially with the increase of In concentration in Se-Cd alloy. Results indicated that λe and χe are maximum at 6 at.wt% of indium and ρCp almost constant for all glassy alloys. This is suggestive of fact that Se92Cd2In6 can be considered as a critical composition of this series, at which the alloy becomes, chemically ordered and better thermally stable than other composition. Further addition of indium in Se-Cd decreases the values of λe and χe. The behavior is explained on the basis of decrease of localized states and increase in disorderness for higher composition indium.


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