Landau-Lifshitz-Gilbert micromagnetic analysis of single-pole-type write head for perpendicular magnetic recording using full-FFT program on PC cluster system

被引：13

作者：

Kanai, Yasushi ^{[1
]}

Saiki, Masahiko ^{[1
]}

Hirasawa, Kazunori ^{[1
]}

Tsukamomo, Toshio ^{[1
]}

Yoshida, Kazuetsu ^{[2
]}

机构：

[1] Niigata Inst Technol, Fac Engn, Dept Informat & Elect Engn, Kashiwazaki 9451195, Japan

[2] Kogakuin Univ, Dept Informat & Commun Engn, Tokyo 1638677, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 06期

基金：

日本学术振兴会;

关键词：

LLG equation; micromagnetic simulation; parallel computing; PC cluster system; perpendicular magnetic recording; single-pole-type head;

D O I：

10.1109/TMAG.2007.916254

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis using a parallelized program on a PC cluster is investigated. In the analysis, the whole magnetic material is treated micromagnetically using the LLG equation. The fast Fourier transform (FFT) algorithm is incorporated in the head region in addition to the medium region to derive the demagnetization field and the program is parallelized using the message passing interface (MPI). The PC cluster system with 8 CPU has achieved a calculation speed 4800 times faster than our original program on a single 64-bit processor system. Quasi-static field distributions for a single-pole type (SPT) are derived and the accuracy is validated by comparison with the finite-element method (FEM). Finally, dynamic responses are derived for various head structures and materials.

引用

页码：1602 / 1605

页数：4

共 12 条

[1] Calculation of demagnetizing field distribution based on fast Fourier transform of convolution [J].