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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
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 Code: | B01J 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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