High-field gradient single-pole head with an improved pole structure

Weixing Xia, Hiroaki Muraoka, Yoshihisa Nakamura

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

Relationship between head field and pole structure in single-pole head is investigated by finite-element method calculation. The calculation reveals that regular single-pole head does show relatively large field gradient with maximum of 150 Oe/nm, which is crucial for high-resolution recording, but only for relatively large field strength. By placing an additive pole in the vicinity of main pole, the head-field gradient is improved. The new pole structure increases the gradient up to 250 Oe/nm. The large field gradient is obtained in wider range of field strength than the regular single-pole head. The calculation also shows simulated recorded transition with the large head field gradient becomes narrow.

Original languageEnglish
Pages (from-to)2216-2218
Number of pages3
JournalIEEE Transactions on Magnetics
Volume38
Issue number5 I
DOIs
Publication statusPublished - 2002 Sep 1
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Keywords

  • Head-field gradient
  • Perpendicular magnetic recording
  • Single-pole head

ASJC Scopus subject areas

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

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