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IJPAP Vol.44(03) [March 2006] >


Title: Acoustical investigation of magnesium oxide
Authors: Kailash
Raju, K M
Shrivastava, S K
Keywords: Elastic constants
Magnesium oxide
Ultrasonics
Semiconducting crystals
Issue Date: Mar-2006
Publisher: CSIR
IPC CodeB01J 19/10
Abstract: The higher order elastic constants of MgO starting from basic parameters viz. the nearest neighbour distance, hardness parameter using Coulomb and Börn-Mayer potentials have been obtained. These values are utilized to obtain Grüneisen parameters and non-linearity constants. Non-linearity constants ratio, ultrasonic attenuation due to phonon-phonon interaction ( /f2)p-p and thermo elastic loss ( /f2)th are calculated in a wide temperature range along <100>, <110> and <111> crystallographic directions of propagation for longitudinal and shear waves and compared with available theoretical and experimental results.
Page(s): 230-234
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(03) [March 2006]

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