| 无序材料玻璃相变的关联特性 |
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| 引用本文： | 曹万强.无序材料玻璃相变的关联特性[J].湖北大学学报(自然科学版),2002,24(2):141-144. |
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| 作者姓名： | 曹万强 |
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| 作者单位： | 湖北大学物理学与电子技术学院，湖北武汉430062 |
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| 摘 要： | 指出了由极值动力学所导出的活化能为Ngai由实验结果推导的表观活化能，对无序材料的玻璃相变温度区表现出的时间与温度关联性的分析发现：伸展指数的温度行为导致了VFT方程；介电驰豫的减慢来源于伸展行为和因子的温度行为，指出了标度理的适用条件为伸展指数不随温度而变化；提出了伸展指数函数由单一单元的衰减引起；von Schweidler函数由多个单元的共同衰减引起。
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| 关 键 词： | 无序材料 玻璃相变 关联特性 介电驰豫 |
| 文章编号： | 1000-2375(2002)02-0141-04 |
| 修稿时间： | 2002年2月27日 |
Correlative characters of glass transition in disordered materials |
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| Cao Wanqiang.Correlative characters of glass transition in disordered materials[J].Journal of Hubei University(Natural Science Edition),2002,24(2):141-144. |
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| Authors: | Cao Wanqiang |
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| Abstract: | The activation energy of streched exponential relaxation derived from extremal dynamic model is the apparent activation energy observed by Ngai in experiments.The further investigation of correlative characters of glass transition temperature range in disordered materials found that temperature behavior of stretched factor is the souce of VFT function and the slowing down of dielectric relaxation in transition temperature results from both the stretched behavior and temperature behavior of the factor.Suggestion is proposed that stretched exponential function comes from the decay of single-unit and the von Schweidler function is caused by the decay of the multi-unit. |
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| Keywords: | glass transition disordered material dielectric relaxation time-temperature correlative character |
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