Atomic-Level Characterization of Dynamics of Copper Ions in CuAgSe
Atomic-Level Characterization of Dynamics of Copper Ions in CuAgSe
复制标题
CuAgSe 中铜离子动力学的原子级表征
DOI:
10.1021/acs.jpcc.5b12296
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发表时间:
2016-02
影响因子:
3.7
通讯作者:
Wu Guangheng
中科院分区:
文献类型:
--
作者:
Shi Chenglong;Xi Xuekui;Hou Zhipeng;Liu Enke;Wang Wenhong;Jin Shifeng;Wu Yue;Wu Guangheng
To examine the ionic migrations on atomic level in metal chalcogenide phonon glasses, 63Cu solid state nuclear magnetic resonance (NMR) spectroscopy was performed in an archetype CuAgSe compound. The observed characteristic motional narrowing effect in the superionic state provide clear evidence for the model of single ion-hopping instead of free-ion-like motion. We further find, for the first time, that thermal conductivity is strongly correlated with cation dynamics revealed by NMR within the range of temperatures investigated. This investigation provides better understanding how microscopic structure affects thermal transport properties which is of current interest in transition-metal chalcogenide based fast ion conductors.
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