NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.46 [2008] >
IJPAP Vol.46(10) [October 2008] >


Title: High pressure study of structural and elastic properties of barium chalcogenides
Authors: Arya, Balwant S
Aynyas, Mahendra
Sanyal, Sankar P
Keywords: High pressure
Elastic properties
Phase transition
Issue Date: Oct-2008
Publisher: CSIR
Abstract: The structural and elastic properties of barium chalcogenides (BaX; X = S, Se, Te) under high pressure have been investigated by using a two body inter-ionic potential approach with modified ionic charge (Zme). The equation of states in NaCl type to CsCl type structural phases for BaX has been depicted and found that the volume collapses at the phase transition pressures. The phase transition pressures 7.2 GPa, 6.1 GPa, 5.0 GPa respectively for BaS, BaSe, and BaTe obtained by us, are in close agreement with experimental data (6.5 GPa, 6.0±0.2 GPa, 4.8±0.3 GPa). The bulk modulus, pressure derivatives, second order elastic constants (SOEC) and third order elastic constants (TOEC) at high pressure have been calculated, which show predominantly ionic nature of these compounds. The variation of second order elastic constants (C₁₁, C₄₄) with pressure has been presented.
Page(s): 722-726
ISSN: 0019-5596
Source:IJPAP Vol.46(10) [October 2008]

Files in This Item:

File Description SizeFormat
IJPAP 46(10) 722-726.pdf96.15 kBAdobe PDFView/Open
 Current Page Visits: 433 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 625119 since 06-Feb-2009  Last updated on 28-Nov-2014Webmaster: nopr@niscair.res.in