Title :
Hybrid finite element and fast Fourier on multipoles algorithm for micromagnetic modeling of perpendicular SOMA media
Author :
Long, H. ; Ong, E. ; Xiao, P. ; Liu, Z.
Author_Institution :
Hitachi Global Storage Technol., Singapore
Abstract :
In this paper, a 3D finite element micromagnetic model is used to simulate the switch dynamics of Self-Organized Magnetic Array (SOMA) recording system. The influence of media grain properties such as anisotropy field distribution is investigated. Our studies also include the signal to noise ratio (SNR) with respect to different bit-array alignments. The fluctuations of signal and noise are investigated under the condition that the transition location is shifted in a square assembled array.
Keywords :
fast Fourier transforms; finite element analysis; micromagnetics; perpendicular magnetic recording; SOMA recording system; anisotropy field distribution; fast Fourier transform; finite element micromagnetic model; hybrid finite element; multipoles algorithm; noise fluctuations; perpendicular SOMA media; self-organized magnetic array; signal fluctuations; square assembled array; switch dynamics; Anisotropic magnetoresistance; Finite element methods; Fluctuations; Magnetic anisotropy; Magnetic switching; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Signal to noise ratio; 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.2006.375536
