Advanced optimization of standard head model with higher writing field and higher field gradient using 3-D ON/OFF method

Norio Takahashi, Koji Akiyama, Daisuke Miyagi, Yasushi Kanai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A magnetic recording head for 600 Gb/in2 with a gh recording head field, which is called a "standard model," is proposed after deep consideration by utilizing the numerical analysis. In order to improve the topology of the having a higher writing field and higher field gradient, the introduction of a 3-D topology optimization method, which is called the "ON/OFF method", is indispensable. In this paper, an advanced topology of the standard head model is obtained using the ON/OFF method. The recording field of 1.7 T and the field gradient of 0.0314 T/nm with low stray field of 0.1 T at the center of an adjacent track are obtained. The leakage flux in the adjacent track, which is the cause of the crosstalk, is reduced to 50%, which is the most significant improvement.

Original languageEnglish
Article number4527007
Pages (from-to)966-969
Number of pages4
JournalIEEE Transactions on Magnetics
Volume44
Issue number6
DOIs
Publication statusPublished - 2008 Jun 1

Keywords

  • Finite-element analysis
  • Magnetic recording head
  • Topology optimization

ASJC Scopus subject areas

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

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