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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(05) [May 2005] >
| Title: | Ultrasonic studies of thulium monochalcogenides |
| Authors: | Kor, S K
Singh, Devraj
Srivastava, A K |
| Keywords: | Ultrasonics
Coulomb potential
Born Mayer potential
Morse potential
Elastic constants
Monochalcogenides |
| Issue Date: | May-2005 |
| Publisher: | CSIR |
| IPC Code: | B01J19/10 |
| Abstract: | The ultrasonic
studies have been made in a group of materials like thulium monochalcogenides
TmX (X = S, Se and Te) which are very important because TmS behaves like
a metallic crystal, TmSe is intermetallic and TmTe is a semiconductor. Thus,
the ultrasonic study will give a clear picture of ultrasonic attenuation in
these substances. Morse potential has been used for the evaluation of second
order elastic constants (SOEC) and third order elastic constants (TOEC) for TmS
and TmTe which is the most appropriate method. However, Coulomb and Born Mayer
potentials are the most appropriate for evaluation of SOEC and TOEC in
semiconductors. Then, the Mason’s approach has been used for the evaluation of
ultrasonic attenuation. |
| Page(s): | 355-358 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(05) [May 2005]
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