PAC study of ionic motion in silver compound superionic conductors |
| |
Authors: | Mamoru Mekata Yasuhiro Seguchi |
| |
Institution: | 1. Chemistry Department, Faculty of Science, Kyoto University, 606, Kyoto, Japan
|
| |
Abstract: | Ionic motion in superionic conductors, Ag2S, Ag2Se and Ag3SI was investigated by γ-γ PAC on111Cd. Diffusion constant measurements showed that probe ions migrate almost as fast as Ag+ ions above 500K in Ag2S and Ag2Se and above 700K in Ag3SI. Multivalent impurities were found to be unstable in AgI and Ag2Te. The correlation time of ionic motion was deduced from the observed relaxation rate together with the diffusion constants. The correlation time and its activation energy increase in order of Ag2S, Ag2Se and Ag3SI.The flight distance of Ag+ ions remains almost constant in the measured temperature range. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|