Title :
Simulation study of nonlinear transition shift in perpendicular magnetic recording media
Author :
Honda, N. ; Kiya, T. ; Ouchi, K.
Author_Institution :
Akita Res. Inst. of Adv. Technol., Japan
Abstract :
Recording resolution of perpendicular magnetic recording media is increased with an increased perpendicular M-H loop slope. In this paper, NLTS of double-layered perpendicular recording media with increased M-H loop slopes was investigated using micromagnetic simulation. It was concluded that increased NLTS of the media with increased M-H loop slopes is mainly caused by the decreased write field gradient due to decreased required write field for such media. It was also suggested that the demagnetizing field of a sharper magnetic transition causes an additional decrease in the write field gradient.
Keywords :
magnetic heads; magnetic recording noise; micromagnetics; perpendicular magnetic recording; M-H loop slopes; exchange coupling; micromagnetic simulation; nonlinear transition shift; perpendicular magnetic recording media; recording density; recording resolution; write field gradient; Anisotropic magnetoresistance; Demagnetization; Magnetic anisotropy; Magnetic heads; Micromagnetics; Mirrors; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Soft magnetic materials;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464108