DC AND AC CONDUCTIVITY IN WIDE COMPOSITION RANGE LI2O-P2O5 GLASSES
DC AND AC CONDUCTIVITY IN WIDE COMPOSITION RANGE LI2O-P2O5 GLASSES
复制标题
DOI：
10.1016/0022-3093(86)90067-0
复制
发表时间：
1986-06-01
影响因子：
3.5
通讯作者：
ANGELL, CA
中科院分区：
文献类型：
--
作者：
MARTIN, SW;ANGELL, CA
使用能够产生高精度数据的全自动系统，在较宽的频率和温度范围内研究了磷酸锂玻璃的电导率。由于采用“全干燥箱”样品制备设施，P2O5 含量高达 65 mol% 的样品已被纳入其中，而不会影响数据质量。通过微观模型对相应的硅酸盐、硼酸盐和硼铝酸盐玻璃的行为进行了比较和分析。在另一种成分极端情况下，测量范围已扩展到 62.5 mol% Li2O，但未发现电导率最大值。使用模量形式对交流电导率数据进行了分析，并记录了 Kohlrausch 参数 β 随成分的系统趋势。在 37-62.5 mol% li2O 的组成范围内，β 从 0.60 降至 0.49，并且似乎与等温电导率的相关性最好。人们注意到富含 P2O5 的玻璃中的异常结构效应。
The electrical conductivity of lithium phosphate glasses has been studied over wide frequency and temperature ranges, using a fully automated system capable of yielding data of high precision. Due to a “total drybox” sample preparation facility, samples containing P2O5contents up to 65 mol% have been included without sacrifice of data quality. Comparisons with the behavior of the corresponding silicate, borate and boroaluminate glasses have been made and analyzed in terms of microscopic models. At the other composition extreme, measurements have been extended to 62.5 mol% Li2O without finding a conductivity maximum. The ac conductivity data have been analyzed using the modulus formalism, and systematic trends in the Kohlrausch parameter β with composition have been recorded. β decreases from 0.60 to 0.49 over the composition range 37–62.5 mol% li2O and seems to correlate best with the isothermal conductivity. Attention is drawn to anomalous structuring effects in P2O5-rich glasses.