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Micromagnetic Analysis of Shielded Write Heads Using Symmetric Multiprocessing Systems

2010; IEEE Magnetics Society; Volume: 46; Issue: 8 Linguagem: Inglês

10.1109/tmag.2010.2045883

1941-0069

Yasushi Kanai, K. Koyama, Manabu Ueki, Toshio Tsukamoto, Kazuetsu Yoshida, Simon John Greaves, H. Muraoka,

Electromagnetic Simulation and Numerical Methods

Acceleration of micromagnetic calculations on symmetric multiprocessing (SMP) systems is investigated. A speed up of more than 20 times has been realized compared with the serial processing software. The SMP system with the optimized software has a speed up of 5.6 times compared to a previous version on an 8-CPU cluster system. Micromagnetic analysis of a write head with trailing and side shields is performed to derive the quasi-static recording field distributions, dynamic recording fields and magnetization rotation processes. It is noted that the dynamic recording field is affected by the trailing and side shields. A write head for shingled recording is also analyzed and is found to be promising due to its higher recording field.