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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(09) [September 2005] >
| Title: | Effective charges in ternary chalcogenide spinels |
| Authors: | Kushwaha, A K
Kushwaha, S S |
| Keywords: | Dynamical charges
Ternary chalcogenide spinels
Transverse charges
Longitudinal charges |
| Issue Date: | Sep-2005 |
| Publisher: | CSIR |
| IPC Code: | G03G |
| Abstract: | The effective ionic charge Z*e of each ion is determined within a narrow variable range for ternary
chalcogenide spinel compounds. The Szigeti effective charge e*s is also evaluated for the
anion and cation using the observed optical dielectric constant Ɛω. The correlation between e*s and the dielectric
constant Ɛω are empirically found
as Ɛω-1=2.0/[(e*s./Zeff e)+(e*s./Zeff e)2].From effective ionic
charges, we conclude that the ionicity increases in the order oxide >
sulphide > selenide, indium compounds > chromium compounds, normal spinel > inverse spinel. |
| Page(s): | 664-667 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(09) [September 2005]
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