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http://nopr.niscair.res.in/handle/123456789/2640
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 |
URI: | http://hdl.handle.net/123456789/2640 |
ISSN: | 0019-5596 |
Appears in Collections: | IJPAP Vol.45(08) [August 2007] |
Files in This Item:
File | Description | Size | Format | |
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IJPAP 45(8) 658-662.pdf | 137.69 kB | Adobe PDF | View/Open |
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