Title :
Micromagnetic Simulations of Perpendicular Single-Pole-Type Head for Various Pole-Tip Structures
Author :
Kanai, Yasushi ; Saiki, Masahiko ; Yoshida, Kazuetsu
Author_Institution :
Niigata Inst. of Technol., Kashiwazaki
fDate :
4/1/2007 12:00:00 AM
Abstract :
This paper describes the micromagnetic simulation of a single-pole-type head for a perpendicular magnetic recording. A Landau-Lifshitz-Gilbert calculation that treats the whole magnetic material micromagnetically is performed. The recording fields are investigated for various pole-tip structures. It is found that an optimum nonzero throat height exists that maximizes recording field strength. The addition of a trailing shield is found to be effective in regards to obtaining a larger recording field gradient
Keywords :
magnetic heads; micromagnetics; perpendicular magnetic recording; Landau-Lifshitz-Gilbert calculation; field gradient recording; micromagnetic simulations; optimum nonzero throat; perpendicular magnetic recording; perpendicular single-pole-type head; pole-tip structures; recording field strength maximization; Computational modeling; Equations; Finite difference methods; Magnetic analysis; Magnetic heads; Magnetic materials; Magnetostatics; Micromagnetics; Perpendicular magnetic recording; Saturation magnetization; Landau–Lifshitz–Gilbert (LLG) equation; micromagnetic simulation; perpendicular magnetic recording; single-pole-type (SPT) head;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.892268
