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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(01) [January 2007] >
| Title: | High-pressure P-V relation and Grüneisen parameter for elemental strontium |
| Authors: | Vyas, P R
Gohel, V B
Bhatt, N K
Jani, A R |
| Keywords: | Equations of states
Grüneisen parameter
Mean-field potential
Strontium |
| Issue Date: | Jan-2007 |
| Publisher: | CSIR |
| IPC Code: | G01L |
| Abstract: | The functional relationship among the thermodynamical variables for a system in equilibrium, equation of state (EOS), provides an insight to the dependence of the microscopic internal structure of the material. In this regard, we have calculated static and dynamic P-V curve for divalent fcc-Sr. Vibrational contribution to the Helmholtz free energy is evaluated within recently proposed mean-field potential (MFP) approximation with the local pseudopotential. Temperature dependence of thermodynamic Grüneisen parameter (ϒth), a quantity that enters the Mie-Grüneisen form of EOS, is also obtained. Results so obtained are in good agreement with the experimental and other theoretical estimates. Use of present coupling scheme (i.e. MFP + pseudopotential) is thus justified; which has an added benefit of computational simplicity. |
| Page(s): | 93-95 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.45(01) [January 2007]
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