Dielectric and anharmonic behaviour of mixed alkali halides |
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Authors: | Shobha Sharma R P Goyal B R K Gupta |
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Institution: | (1) Department of Physics, St. John’s College, 282002 Agra, India;(2) Department of Physics, G. B. Pant University, 263145 Pantnagar, India |
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Abstract: | Summary In the present paper an analysis of the dielectric behaviour and anharmonic contribution to the dielectric constants has been
made of KCl−KBr mixed ionic crystals. The temperature and volume derivatives of static (ε0), electronic (ε∞) dielectric constants and energy gap parameter (E
g) have been calculated using the Szigeti and Havinga and Bosman dielectric theories. The anharmonic contributions have been
estimated in terms of temperature derivatives of dielectric constants at constant volumes. The modified form of Clausius-Mossotti
theory of dielectric polarization has been used for the mixed crystal under study. The calculated quantities have been compared
with the available experimental data. A good agreement has been obtained.
To speed up publication, the authors of this paper have agreed to not receive the proofs for correction. |
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Keywords: | Other topics in dielectric properties and materials |
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