Title :
Micromagnetic Simulation of Thermal Activation Volume in Perpendicular Recording Media with Dispersions of Grain Size
Author :
Igarashi, M. ; Akagi, F. ; Sugita, Y.
Author_Institution :
Hitachi Ltd., Tokyo
Abstract :
In this study, the activation volumes of perpendicular recording media with dispersions of grain size have been analyzed using Voronoi lattice by micromagnetic simulation. An array of polygonal prism grains with perfect mirror image for soft underlayer (SUL) was used to simulate a section of a perpendicular recording medium. Thermal activation volume was obtained from the difference of the magnetization distributions.
Keywords :
grain size; magnetisation; micromagnetics; perpendicular magnetic recording; storage media; Voronoi lattice; grain size dispersions; magnetization distribution; micromagnetic simulation; perpendicular recording media; polygonal prism grain array; soft underlayer; thermal activation volume; Analytical models; Gaussian distribution; Grain size; Magnetic anisotropy; Magnetic switching; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Switches;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376423
