%0 Journal Article
%T First-Principles Study on Magnetic Properties of V-Doped ZnO Nanotubes<br>
%A ZHANG Fu-Chun
%A ZHANG Zhi-Yong
%A ZHANG Wei-Hu
%A YAN Jun-Feng
%A YUN Jiang-Ni
%A <br>
%J 中国物理快报
%D 2009
%I 
%X Electronic and magnetic properties of V-doped ZnO nanotubes in which one of Zn2+ ions is substituted by V2+ ions are studied by the first-principles calculations of plane wave ultra-soft pseudo-potential technology based on the spin-density function theory. The computational results reveal that spontaneous magnetization in V-doped (9,0) ZnO nanotubes can be induced without p-type or n-type doping treatment, and the ferromagnetism is isotropic and independent of the chirality and diameter of the nanotubes. It is found that V-doped ZnO nanotubes have large magnetic moments and are ferromagnetic half-metal materials. Moreover, the ferromagnetic coupling among V atoms is generated by O 2p electron spins and V 3d electron spins localized at the exchanging interactions between magnetic transitional metal (TM) impurities. The appearance of ferromagnetism in V-doped ZnO nanotubes gives some reference to fabrication of a transparent ferromagnet which may have a great impact on industrial applications in magneto-optical devices.
%K 61
%K 46
%K Fg
%K 62
%K 20
%K Dc<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=2D0126B08EEB0BDA80C4FD7CB0BBA21B&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0