Artificial domain control of a single-pole head and its read/write performance in perpendicular magnetic recording

Hiroaki Muraoka, Yoshihisa Nakamura

Research output: Contribution to journalArticle

Abstract

A single-pole head for perpendicular magnetic recording utilizes a soft magnetic film as a main pole which acts as a flux guide. The properties of the main pole govern the head performance. In this paper, the relation between the domain structure of the main pole film and its recording characteristics were investigated. In addition, the effects of domain-control techniques has been shown for film forming small notches along its sides, and for multilayered film. We conclude that when the spin rotation is dominant in the main pole film compared with the wall motion, high sensitivity and stability are accomplished. Finally, we demonstrate a D50 of 170 kFRPI and an error rate of 10-11 at 200 kFRPI utilizing a thin main pole film whose thickness is about 100 nm.

Original languageEnglish
Pages (from-to)268-274
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume134
Issue number2-3
DOIs
Publication statusPublished - 1994 Jun

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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