Pressure-volume calculation in bcc metals using Born stability criteria |
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Authors: | Piyush Kuchhal Narsingh Dass |
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Affiliation: | (1) Physics Department, University of Roorkee, 247 667 Roorkee, India |
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Abstract: | A simple analytical two-body potential φ(r) = −Ar −n + B exp(−pr m) is considered for P-V calculations in bcc metals using Born stability criteria. It is shown that the stability of bcc metals can be expressed uniquely as a function of a parameter q (discussed in the text). The P-V calculations are done in ten bcc metals. The calculations are compared with the experimental data of shock-wave measurements and also with other potential available. It is found out that the present potential is better than the other two-body potentials in case of bcc metals. Further, the calculations done for TOEC and the first pressure derivative of SOEC are found in good agreement with the reported results. |
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Keywords: | Two-body pair potential Born stability criteria second and third order elastic constants bcc metals |
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