用最大熵原理研究极性分子电介质的极化  

Using Maximum Entropy Principle to Study Polarization of Dielectrics with Polar Molecules

作　　者：晋宏营[1] 刘美云[1] 

机构地区：[1]榆林学院能源工程学院,陕西榆林719000

出　　处：《延安大学学报（自然科学版）》2012年第1期93-95,101,共4页Journal of Yan'an University：Natural Science Edition

基　　金：陕西省教育厅科学研究项目(2010JK933);榆林学院高学历人才科研启动基金项目(11GK04)

摘　　要：最大熵原理是自然界的一个基本规律,它在很多领域得到广泛应用。本文从电介质的微观结构出发,使用最大熵原理研究了极性分子电介质在电场中的极化规律。结果发现,当电场不很强时,电极化强度与电场强度成正比;但当电场很强时,电极化强度与电场强度成非线性关系。结果说明,电介质是线性的还是非线性的,还要看它所处的电场情况。The maximum entropy principle is a basic law of nature,and it has been widely applied to various fields.Based on the dielectric microstructure,the paper uses the maximum entropy principle to study polarization of dielectrics with polar molecules.The result indicates that when electric field isn’t very strong,the electric polarization intensity is proportional to electric field strength.However,when electric field is very strong,there is a non linear relationship between the electric polarization intensity and the electric field strength.This shows whether a dielectric is linear will be decided by the electric field around it.

关 键 词：最大熵原理 电介质 电极化 极性分子 

分 类 号：O441.6[理学—电磁学]