Table of Contents
SRX Materials Science
Volume 2010 (2010), Article ID 890650, 8 pages
http://dx.doi.org/10.3814/2010/890650
Research Article

Temperature Dependence of Elastic Constants of Alkaline Earth Oxides

1Department of Physics, Agra College, Agra 282002, India
2Department of Applied Sciences, FET, R.B.S. College, Bichpuri, Agra 283105, India

Received 11 July 2009; Revised 2 September 2009; Accepted 22 September 2009

Copyright © 2010 Seema Gupta et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The elastic properties of alkaline earth oxides (AEOs) under high temperature are discussed within the framework of many body Lundqvist potential incorporating the contribution of thermal phonon pressure. The short-range repulsive interaction is taken up to the second nearest neighbors. The derived expressions are used to compute the values of second-order elastic constants (SOECs) and bulk modulus of alkaline earth oxides at different temperatures (300K°–2000K°). The results are found to be satisfactory and are in agreement with available experimental and the theoretical results.