TY - JOUR
T1 - Micromagnetic recording field analysis of fast-switching single-pole-type heads for bit-patterned media
AU - Kanai, Y.
AU - Saiki, M.
AU - Hirasawa, K.
AU - Tsukamoto, T.
AU - Yoshida, K.
AU - Greaves, S. J.
AU - Muraoka, H.
N1 - Funding Information:
The authors would like to acknowledge use of LLG micromagnetic software from Central Research Laboratory, Hitachi, Ltd. and the kind support by Storage Research Consortium (SRC), Japan.
Funding Information:
This work was supported in part by a grant in aid for the Japan Society for the Promotion of Science (No. 18,560,352) and Storage Research Consortium (SRC), Japan.
PY - 2008/7
Y1 - 2008/7
N2 - A Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis of the recording field of single-pole-type (SPT) heads was carried out. The whole volume comprising the SPT head and the double-layered medium was treated micromagnetically using the finite-difference method with cubic cells as small as 5 nm, giving a total number of cells of more than 10.8 million. A parallelized fast Fourier transform (FFT) method was used to solve this large-scale problem. Dynamic recording fields were calculated for various head structures and head materials. The timing (synchronization) between the dynamic head field and land location in bit-patterned media (BPM) is discussed and the design methodology is discussed for a fast-switching SPT head.
AB - A Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis of the recording field of single-pole-type (SPT) heads was carried out. The whole volume comprising the SPT head and the double-layered medium was treated micromagnetically using the finite-difference method with cubic cells as small as 5 nm, giving a total number of cells of more than 10.8 million. A parallelized fast Fourier transform (FFT) method was used to solve this large-scale problem. Dynamic recording fields were calculated for various head structures and head materials. The timing (synchronization) between the dynamic head field and land location in bit-patterned media (BPM) is discussed and the design methodology is discussed for a fast-switching SPT head.
KW - Bit-patterned media
KW - LLG micromagnetic analysis
KW - Parallel computing
KW - Perpendicular magnetic recording
KW - Single-pole-type (SPT) head
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U2 - 10.1016/j.jmmm.2008.02.120
DO - 10.1016/j.jmmm.2008.02.120
M3 - Article
AN - SCOPUS:42749093937
SN - 0304-8853
VL - 320
SP - e287-e290
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 14
ER -