International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2568

Full Length Research Paper

First principles study of some thermodynamic properties of Calcium Indium (CaIn) intermetallic compound

K. Alfaramawi
  Science Department, Teachers College, King Saud University, Riyadh, Saudi Arabia. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Email: [email protected].

  •  Accepted: 09 July 2012
  •  Published: 09 October 2012

Abstract

 

Calculations of some thermodynamic properties of Calcium Indium (CaIn) intermetallic compounds are carried out using the quasi harmonic Debye model. The Debye temperature was studied as a function of both lattice temperature and unit cell volume. The calculations showed that the Debye temperature decreases slowly with elevation of the temperature. It was found that the Debye temperature varies from 130 to 110K when the lattice temperature increases from 10K up to 1600K which indicates a small range of variation with temperature. The dependence of the Debye temperature on the volume revealed that it is generally increased with increasing of the unit cell volume. The temperature dependent bulk modulus of CaIn compound was investigated at zero pressure. It decreases as the temperature increases. This may be attributed to the rapid change of the cell volume as the temperature increases.

 

Key words: Intermetallic compounds, Debye temperature, bulk modulus, Gruneisen parameter.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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