Micromagnetic analysis to reduce adjacent track erasure field in planar write heads

Yasushi Kanai, Hideto Hosokai, Kazuya Koyama, Kiyoshi Yamakawa, Kazuetsu Yoshida, Simon J. Greaves, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Micromagnetic analysis was carried out to reduce the adjacent track erasure (ATE) field in planar type recording write heads. First, a quasi-static head field analysis showed that a three-step tapered pole had advantages over one-step and two-step poles. Next, dynamic micromagnetics proved that smaller models had higher recording fields and lower ATE fields compared with larger models. Finally, it was shown that the planar head had advantages over conventional, single-pole-type (SPT) heads in respect of its larger recording field, faster response to a high-frequency current and smaller ATE field.

Original languageEnglish
Article number6027693
Pages (from-to)3399-3402
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Adjacent track erasure (ATE) field
  • micromagnetic simulations
  • perpendicular magnetic recording
  • write heads

ASJC Scopus subject areas

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

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