ADP晶体(100)面相变界面的微观结构  

The Microstructure to the Phase Transition Interface of the(100) Faces of ADP Crystals

作　　者：曹亚超[1] 李明伟[1] 喻江涛[1] 王晓丁[1] 朱廷霞[1] 

机构地区：[1]重庆大学动力工程学院,重庆400030

出　　处：《人工晶体学报》2010年第6期1359-1366,共8页Journal of Synthetic Crystals

基　　金：国家自然科学基金(50676113;50976127)资助项目

摘　　要：ADP晶体{100}面族生长的实时与非实时AFM（Atomic Force Microscopy）研究表明,其相变驱动力为0.01-0.04kT/ωs时,ADP晶体（100）面的平均面粗糙度和均方面粗糙度均不到0.3 nm,小于该晶面间距0.75 nm,微观结构表现为光滑界面,与夫兰克模型、特姆金模型相符,并观测到螺位错生长;在相变驱动力为0.053-0.11kT/ωs时,ADP晶体的（100）面的平均面粗糙度和均方面粗糙度介于1.8-4.2 nm,大于该晶面间距0.75 nm,微观结构粗糙度增加,趋向于粗糙界面,可用特姆金的弥散界面模型解释,界面上观测到多二维核生长。In situ and ex situ atomic force microscopy observation has been used to investigate {100} surfaces microstructure of ADP crystal.The results show that both crystal surface average roughness Ra and mean square root RMS are less than 0.3 nm which is less than the interplanar distances of（100） 0.75 nm,the microstructure of interfaces is characteristic of smoothness when phase transition drive force is within 0.01-0.04kT/ωs,which is agree with the model theory from Frank、Temkin,screw dislocation growth is observed.The crystal surface average roughness Ra and mean square root RMS are within 1.8-4.2 nm,they are larger than the interplanar distances of（100） of 0.75 nm,surface microstructure becomes rough when phase transition drive force is within 0.053-0.11kT/ωs,which is agree with the model theory from Temkin,multi-2D nucleation growth is observed.

关 键 词：相变界面 微观结构 粗糙度 相变驱动力 AFM 

分 类 号：TK124[动力工程及工程热物理—工程热物理]