%0 Journal Article
%T Magnetism research on CuMnAl, CoMnAl and CuCoMnAl alloys by KKR-CPA-LDA calculation<br>KKR-CPA-LDA计算方法对CuMnAl和CoMnAl以及CuCoMnAl合金的磁性研究
%A Feng Lin
%A Zhu Zhi-Yong
%A Zhu Wei
%A Liu En-Ke
%A Tang Xiao-Dan
%A Qian Jin-Feng
%A Wu Guang-Heng
%A Meng Fan-Bin
%A Liu He-Yan
%A Luo Hong-Zhi
%A Li Yang-Xian
%A <br>冯琳
%A 朱志永
%A 朱伟
%A 刘恩克
%A 唐晓丹
%A 钱金凤
%A 吴光恒
%A 孟凡斌
%A 刘何燕
%A 罗鸿志
%A 李养贤
%J 物理学报
%D 2010
%I 
%X Comparing with the experimental data, the composition dependence of atomic moment and Co-Mn exchange interaction in CuMnAl, CoMnAl and CuCoMnAl alloys have been investigated by KKR-CPA-LDA calculation. It has been found that, due to the different surrounding environments, the magnetic moment of excess Mn atom occupying Al sites is larger than that of the original Mn atoms on B sites in Cu50Mn25+xAl25-x alloys. When the Mn content increases in Co50Mn25+xAl25-x alloys, the moment of Co atom increases monotonically, while the Mn moment almost has the same value. In Cu50-xCoxMn25Al25 alloys, it has been revealed that the moment of Co decreases resulting from the decrease of the moment of Mn atom with the substitution of Co for Cu. These results indicate that the atomic moments of Mn and Co atoms are positively related. It has also been found that the Co-Mn exchange interaction can be enhanced by increasing Mn content and its strength comes not only from the added Co but also from the contribution of Mn.
%K KKR-CPA-LDA calculation
%K Co-Mn exchange interaction<br>KKR-CPA-LDA计算
%K Co-Mn间交换作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=DE27BA11D2C8E6CC1A4B7BDEDF9C1406&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=9CF7A0430CBB2DFD&sid=3D39C0493C62B4BA&eid=F484F457D9A52B00&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=11