摘要
本文采用ＳＴＭ在纳米尺度上研究了ＨＯＰＧ（高定向石墨）表面裂纹的尖端。扫描过程中，ＳＴＭ的针尖与样品的相互作用使裂尖处的空位扩散，造成裂纹扩展。裂尖前方的区域非常紊乱，很难分辨出单个的原子。但在局部区域仍存在着一定的周期性结构。紊乱区域周围的点阵结构发生了较大的晶格变形。
The atomic structure of crack tips on HOPG(0001) surface has been studied by STM.A small abnormal distortion in front of the crack tip,atoms in which was difficult to resolve,is found,around which lattice is deformed.Forced by the interaction between the tip and the specimen,atoms in front of tips diffused,which caused cracks to extend.
出处
《电子显微学报》
CAS
CSCD
1997年第6期767-769,共3页
Journal of Chinese Electron Microscopy Society
基金
国家自然科学基金
