Micromagnetic model analysis of planar-type write head field response and dependence on pole tip, return yoke, and shield structure

Yasushi Kanai, Hidekazu Tamura, Kiyoshi Yamakawa, Kazuetsu Yoshida, Simon J. Greaves, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

Abstract

We used a micromagnetic model to investigate the high-frequency (1-5 GHz) response, peak recording field strength, recording field gradient, and adjacent track erasure (ATE) field for various main pole tip, shield, and return yoke structures in planar type heads. The effect of the pole tip area at the air-bearing surface (ABS) and the return yoke structure is also discussed. It was found that the pole tip and shield arrangement had a major effect on the peak recording field strength, recording field gradient, and ATE field, i.e., the trailing and side shields work to reduce the undesired field, however, they also slow the head field response due to the interaction between the main pole tip and the shield. The field responses are also dependent on the main pole tip-shield structures and pole tip structures. The return yoke thickness and area were important determinants of response speed and peak field.

Original languageEnglish
Article number6476734
Pages (from-to)4970-4976
Number of pages7
JournalIEEE Transactions on Magnetics
Volume49
Issue number9
DOIs
Publication statusPublished - 2013

Keywords

  • High-frequency response
  • micromagnetic simulations
  • perpendicular magnetic recording
  • write heads

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Micromagnetic model analysis of planar-type write head field response and dependence on pole tip, return yoke, and shield structure'. Together they form a unique fingerprint.

Cite this