Ionic Conduction in Liquid Ag–Se and Ag–Te Systems
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概要
- 論文の詳細を見る
The ionic conductivity in liquid Ag–Se and Ag–Te systems has been measured using a residual potential technique. The ionic conductivity in the liquid Ag–Se system exhibits a local maximum at the stoichiometric composition of Ag2Se. This maximum decreases rapidly with increasing temperature. The liquid Ag–Te system has also a higher value of the ionic conductivity around the composition of Ag2Te, but a clear maximum as in the case of Ag–Se system cannot be observed even at lower temperatures. This may be considered to reflect a higher Ag+ mobility at Ag2Se just after melting. Such the difference of the ionic conduction near the melting point between both liquid systems, and in particular the unusual temperature dependence of ionic conductivity in the liquid Ag–Se system, could be due to the deference of the structural environment of Ag+ in the system. The structural analysis of liquid Ag2Se and Ag2Te focusing on the environmental structure around Ag+ has been made employing neutron structure factors previously observed, the result of which exhibits that there is a slight but significant difference of the configuration of Ag+ in both liquids near the melting point, that is to say, Ag2Se maintains the local order in the fast ion structure in the crystalline state, whereas, the fast ion structure in Ag2Te largely changes on melting.
- Physical Society of Japanの論文
- 2001-07-15
著者
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Usuki Takeshi
Department Of Chemistry Faculty Of Science Yamagata University
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ABE Keigo
Department of Material and Biological Chemistry, Faculty of Science, Yamagata University
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Uemura Osamu
Department Of Chemistry Faculty Of Science Yamagata University
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Kameda Yasuo
Department of Material and Biological Chemistry, Faculty of Science,
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Uemura Osamu
Department of Material and Biological Chemistry, Faculty of Science,
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Abe Keigo
Department of Material and Biological Chemistry, Faculty of Science,
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