%0 Journal Article
%T Micromagnetics study of the magnetic nano-granular films<br>磁性纳米颗粒膜的微磁学模拟
%A Jiang Jian-Jun
%A Yuan Lin
%A Deng Lian-Wen
%A He Hua-Hui
%A <br>江建军
%A 袁林
%A 邓联文
%A 何华辉
%J 物理学报
%D 2006
%I 
%X The nano-granular magnetic films were investigated using the micromagnetics method in this paper. The nano-granular magnetic film model studied consisted of an aggregate of 122 spherical nano-granules with an fcc structure. The computational results showed that the effect of the dipolar interaction of the system on the static magnetic structure is remarkable, while the effect of exchange interaction is indistinc. The frequency dependent permeability spectra of granular films with different volume ratio of magnetic components were simulated and the percolation phenomena of nanostructural magnetic films were extensively analyzed. Thus, the percolation threshold of the system studied was obtained according to the effective medium theory. Furthermore, the design of nano-granular magnetic films with large magnetic losses were carried out.
%K micromagnetics
%K nanogranular film
%K percolation threshold
%K magnetic permeability
%K materials design<br>微磁学
%K 纳米颗粒膜
%K 逾渗阈值
%K 磁导率
%K 材料设计
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=8DC4376D0A78D426&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=B31275AF3241DB2D&sid=DA933AB6A1B2C9EB&eid=CB79A599A908C3EC&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=11