%0 Journal Article
%T AN EXAFS STUDY OF THE STRUCTURAL MORPHOLOGY OF Ni IN SYNTHETIC DIAMOND<br>合成金刚石中金属Ni结构形态的扩展X射线吸收谱研究
%A LI CHEN-XI
%A LU KUN-QUAN
%A ZHAO YA-QIN
%A SHEN ZHU-TONG
%A <br>李晨曦
%A 陆坤权
%A 赵雅琴
%A 沈主同
%J 物理学报
%D 1990
%I 
%X The structral morphology of metal catalyst Ni in the synthetic diamond was measured by using the fluorecence EXAFS technique. The nickle impurities found exist as fee structure, which is similar to the pure metal Ni. The results obtained from the amount of C atoms coordinated surround Ni and the dilation of Ni-Ni distance show about 9 at-% carbon in the metal Ni matrix which is much more than the limit of earbon solubility 2.7 at-% in metal Ni at normal pressure. The coordination number of Ni in diamond found is less than that in pure metal. This shows that the nickle in the diamond distributes as small particles with dimension about 20?.
%K 金刚石
%K 镍
%K 结构形态
%K X射线吸收谱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=9E878E1BFC34A6BDFE57D91796AFE88A&yid=8D39DA2CB9F38FD0&vid=7C3A4C1EE6A45749&iid=B31275AF3241DB2D&sid=2A8D03AD8076A2E3&eid=B91E8C6D6FE990DB&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=2