NEW SILVER TELLURITE GLASSES

被引:4
|
作者
ZAHRA, AM [1 ]
ZAHRA, CY [1 ]
GANTEAUME, M [1 ]
ROSSIGNOL, S [1 ]
TANGUY, B [1 ]
VIDEAU, JJ [1 ]
PORTIER, J [1 ]
机构
[1] CNRS,CHIM SOLIDE LAB,F-33405 TALENCE,FRANCE
来源
JOURNAL OF THERMAL ANALYSIS | 1992年 / 38卷 / 04期
关键词
SILVER TELLURITE GLASSES;
D O I
10.1007/BF01979405
中图分类号
O414.1 [热力学];
学科分类号
摘要
The glass forming ranges in the TeO2-AgO0.5 and TeO2-AgO0.5-Agl systems have been assessed for two cooling rates; results based on heat capacity and electrical conductivity measurements as well as derived from infrared spectroscopy are presented. The ternary glasses are excellent conductors due to the presence of Ag+ ions mainly supplied by AgI. The decrease in DELTA-C(p) with increasing AgI-content suggests the presence of AgI microdomains which are finely distributed and do not contribute to the configurational heat capacity change. Fast motion of Ag+ ions (low activation energy) occurs in the glassy matrix which shows slow structural relaxation (high activation barrier).
引用
收藏
页码:749 / 760
页数:12
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