关于晶体材料表面导热性质的研究  

A study on the conducting heat properties of crystal material surface

作　　者：阎军锋[1] 王雪文[1] 张志勇[1] 邓周虎[1] 赵丽丽[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2005年第5期552-554,共3页Journal of Northwest University（Natural Science Edition）

基　　金：西北大学科研基金资助项目(04NW57)

摘　　要：目的研究晶体材料表面层中的导热问题。方法从偏离理想边界条件将导致格波之间发生能量交换,进而限制声子平均自由程这个方向出发,利用德拜固体比热理论,对理想边界条件下的固体内部导热系数进行剖析。结果理论推导出与实验事实相符的晶体表面导热系数随温度的变化规律。结论理论模型比较成功,为晶体材料表面层中的导热问题提供了有力的理论依据。Aim To study the conducting heat properties of the crystal surface layer will be studied. Methods The direction being away from the ideal boundary conditions will lead to the energy exchange of the lattice wave and even limit the mean free path, and a revised edition is made to the inner coefficient of thermal conductivit） of the solid which has an ideal surface by using the Debay solid specific heat theory that has been developed maturely. Resuits Finally theoretically it concludes the rule that the change of the coefficient of thermal conductivity of the solid＇s surface follows the change of the temperature. Conclusion The successful theoretical model provides theoretical foundation for the conducting heat properties of crystal material surface layer powerfully.

关 键 词：导热系数 比热 格波 

分 类 号：O482.2[理学—固体物理]