The application of small polaron theory to transition metal oxide glasses
The application of small polaron theory to transition metal oxide glasses
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小极化子理论在过渡金属氧化物玻璃中的应用
DOI：
10.1016/0022-3093(83)90105-9
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发表时间：
1983
影响因子：
3.5
通讯作者：
A. Mansingh
中科院分区：
文献类型：
--
作者：
M. Sayer;A. Mansingh
一系列的过渡金属氧化物玻璃的实验数据的审查显示了强烈的激活能和基于V2O5的玻璃的间距之间的关系。的行为证实，在非晶V2O5和钒酸盐玻璃的运输是通过绝热跳跃与可观的极化子带宽，而非绝热跳跃之间的隔离中心是appropriate基于大多数其他过渡金属氧化物的玻璃。钒的行为与在玻璃网络中保留明确的VO5−结构单元以及优化该单元在玻璃中的填充有关。
A review of the experimental data on a range of transition metal oxide glasses shows a strong relationship between activation energy and site spacing for glasses based on V2O5. The behaviour confirms that transport in amorphous V2O5and vanadate glasses is by adiabatic hopping with an appreciable polaron bandwidth, while non-adiabatic hopping between isolated centres is apropriate for glasses based on most other transition metal oxides. The behaviour of vanadium is linked to the retention of a well-defined VO5−structural unit in the glass network and to optimisation of the packing of this unit within the glass.