【作者】 田泽安； 周丽丽； 刘凤翔； 侯兆阳； 刘让苏；

【Author】 TIAN Ze-an~1,ZHOU Li-li~1,LIU Feng-xiang~1,HOU Zhao-yang~2,LIU Rang-su~1 (1.School of Physics and Microelectronic Science,Hunan University,Changsha 410082,China; 2.Department of Applied Physics,Chang’an University,Xi’an 710064,China)

【机构】 湖南大学物理与微电子科学学院； 长安大学应用物理系；

【摘要】 总结了几种常见结构分析方法的特点,深入分析了这些方法在结构分析上存在的困难及产生困难的原因。引进了多键汇集点(MBP)和共有近邻子环(CNSR)等概念,改进了键对(HA-Pair)的定义,在基本团簇分析法(BasicCluster Analysis,BCA)的基础上提出了一种无需任何预置参数的分析方法——标准团簇分析法(Standard Cluster Analysis,SCA),并将CTIM完善为能够统一表征所有晶体、非晶体结构单元的表征方法。对外表类似fcc单晶的银纳米颗粒的分析表明其内部具有复杂的结构,SCA能够有效揭示其局域对称性、位错及相关结构细节等。更多还原

【Abstract】 In this paper several structural analysis methods are reviewed.The difficulty of these methods and their origin are analyzed.To eliminate the difficult,some new terms such as multi-bond point(MBP) and common neighbor sub-ring(CNSR) are introduced,and the definition of HA-pair is refined.Based on Basic Cluster Analysis(BCA),a new parameter-free approach referred to as Standard Cluster Analysis(SCA) is put forward, and the CTIM notation has been improved so that all structural units in crystal and amorphous can be labeled by sets of index-pairs.The analysis for a silver nano-particle whose appearance similar to a single fcc crystal reveals that the inner structure of it complicated,and all the local symmetry,dislocation and the relative structure details can be detected by SCA readily.更多还原