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http://nopr.niscpr.res.in/handle/123456789/24434| Title: | Lattice dynamical studies of ternary superionic conductors Ag3SX (X=1, Br) |
| Authors: | Sinha, M M Wakamura, K |
| Issue Date: | Oct-2000 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A de Launey angular force model has been applied to study the phonon dispersion in three symmetric directions of ternary superionic conductor Ag3SX (X =1, Br) by assuming them to be ideal perovskite type structure. A lattice dynamical calculation reasonably interprets the dominance of mobile ions in highest frequency mode. The short-range (fs) and longrange (fL) forces in Ag3SX (X =I, Br) for a high frequency band are estimated near the transition temperature Tc and below 300 K. The fL values in both the conductors show an increase with T above Tc whereas the values of fs decrease with T. The temperature dependence of fL and fs are explained satisfactorily from this calculation. |
| Page(s): | 385-389 |
| Appears in Collections: | IJEMS Vol.07(5-6) [October-December 2000] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 7(5-6) 385-389.pdf | 867.15 kB | Adobe PDF | View/Open |
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