Micromagnetic simulation of recording write heads a comparison of various micromagnetic software

Toshio Tsukamoto, Yasushi Kanai, Kazuya Koyama, Kazuetsu Yoshida, Yuji Uehara, Koichi Shimizu, Simon Greaves, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The performance of three micromagnetic software were compared: (a) originally developed by Hitachi and refined at Kogakuin Univeristy and Niigata Institute of Technology, (b) developed by Fujitsu, and (c) Magpar, a free, public domain software. A perpendicular write head was modeled to compare the performance of these software. It was found that the finite-difference method (FDM) based micromagnetic software (a) had difficulties with complex structures but required less RAM, while finite-element, boundary integral method (FEM-BIM) based micromagnetic software (b) and (c) could handle complex structures but required more RAM. We derived the quasi-static recording field distributions and the dynamic recording field responses to high-frequency currents of up to 2.0 GHz. We found that there were no major differences in the head field distributions and responses, while FEM-BIM was superior to the FDM for observing magnetization vector rotation as FEM-BIM can handle complex structures with fine meshes in regions of interest.

Original languageEnglish
Article number6136485
Pages (from-to)311-314
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number2
DOIs
Publication statusPublished - 2012 Feb

Keywords

  • Micromagnetic analysis
  • parallel computing
  • perpendicular magnetic recording
  • single-pole-type (SPT) head

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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