Transition from Single-Domain to Vortex State in Soft Magnetic Cylindrical Nanodots.

Scholz, W. ; Guslienko, K. Y. ; Novosad, V. ; Suess, D. ; Schrefl, T. ; Chantrell, R. W. ; Fidler, J.

Technical Information Center Oak Ridge Tennessee

关键词: Magnetic properties;    Finite element method;    Analytical solution;    Equilibrium;    Magnetization;   

RP-ID  :  DE200344477

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We have investigated the magnetic properties of submicron soft magnetic cylindrical nanodots using an analytical model as well as three dimensional numerical finite element simulations. A detailed comparison of the magnetic vortex state shows the differences between these two models. It appears that the magnetic surface charges play a crucial role in the equilibrium magnetization distribution especially for shifted vortices. In addition magnetic volume charges, which arise from a radial component of the magnetization, have been found. Finally, the magnetic phase diagram for soft magnetic particles with varying aspect ratio is presented.