%0 Journal Article
%T Freezing of Ni nanowires investigated by molecular dynamics simulation<br>金属Ni纳米线凝固行为的分子动力学模拟
%A Zhou Guo-Rong
%A Gao Qiu-Ming
%A <br>周国荣
%A 高秋明
%J 物理学报
%D 2007
%I 
%X The freezing of Ni nanowires at different cooling rates was studied by classical molecular dynamics simulation via embedded atom potential method. The structure evolution of Ni nanowires in the freezing region was also presented. In order to distinguishing the local clusters in the cooling process of Ni nanowires formed at different cooling rates the bond, pair analysis is employed. The simulation results indicate that the freezing of the nanowires starts from the surface and the structure of the nanowires changes from amorphous to fcc crystal via helical multi-shelled structure along with the decrease of cooling rate. The helical multi-shelled structure possesses not only the short-range order and long-range disorder of amorphous structure but also a definite crystallization temperature.
%K nanowires
%K freezing
%K molecular dynamics
%K bond pair analysis<br>纳米线
%K 凝固行为
%K 分子动力学
%K 键对分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=4BC7F257FEFDD66A&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=38B194292C032A66&sid=D56713C22DA9FDE8&eid=CAF3E71A6764366D&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=22