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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(08) [August 2007] >
| Title: | Calculation of lattice specific heat of bcc NbZr dilute alloy |
| Authors: | Semalty, P D
Dev, Kapil |
| Keywords: | Lattice specific heat
Dilute alloys
Resonance modes
Localized modes
Green’s function
Force-constant change |
| Issue Date: | Aug-2007 |
| Publisher: | CSIR |
| Abstract: | The lattice specific heat at very low temperatures, using a perturbation model which includes the mass change and change in the nearest-neighbour force constants due to interaction between impurity and host atoms has been calculated. In addition to the local perturbation due to mass change and force-constant changes, the effect of volume change has also been taken into account. The calculated results have been compared with the experimental measurements and values of central and non-central force-constant changes have been obtained. The increase in lattice specific heat is explained on the basis of these force-constant changes. The possibility of occurrence of resonance and localized modes from the calculation of resonant denominator have been investigated. |
| Page(s): | 658-662 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.45(08) [August 2007]
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