Effect of Electron Beam Orientation on Exit Wave Function via Simulation of Electron Dynamic Diffraction  

作　　者：Yanguo WANG Hongrong LIU Canying CAI Qibing YANG 

机构地区：[1]Micro-Nano Technologies Research Center, Hunan University, Changsha 410082, China [2]Institute of Modern Physics, Xiangtan University, Xiangtan 411105, China [3]Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China

出　　处：《Journal of Materials Science & Technology》2007年第5期713-716,共4页材料科学技术（英文版）

基　　金：financially supported tional Natural Science Foundation of China No. 60271028.

摘　　要：Based on the electron dynamic diffraction, phase shift of the exit wave function vs misorientation of the incident electron beam from the exact zone axis has been calculated for the [001] oriented copper. The result shows that the peak of phase shift is the maximum at the atom position as the electron beam along the exact [001] zone axis, and the peak value of phase shift decreases as increases of the misorientation. At small misorientation, i.e. less than 5 degree, change of the phase shift is minimal. The peak value of phase shift decreases significantly when the incident beam deviates form the zone axis over 10 degree and the exit wave has a planar configuration as the misoriention angle arrives -17 degree. The effect of this phase shift characteristics on the information extracted from the hologram has also been considered.Based on the electron dynamic diffraction, phase shift of the exit wave function vs misorientation of the incident electron beam from the exact zone axis has been calculated for the [001] oriented copper. The result shows that the peak of phase shift is the maximum at the atom position as the electron beam along the exact [001] zone axis, and the peak value of phase shift decreases as increases of the misorientation. At small misorientation, i.e. less than 5 degree, change of the phase shift is minimal. The peak value of phase shift decreases significantly when the incident beam deviates form the zone axis over 10 degree and the exit wave has a planar configuration as the misoriention angle arrives -17 degree. The effect of this phase shift characteristics on the information extracted from the hologram has also been considered.

关 键 词：Electron dynamic diffraction Phase shift Exit wave function MISORIENTATION 

分 类 号：TG13[一般工业技术—材料科学与工程]