Micromagnetic recording field analysis of a single-pole-type head for 1-2 Tbit/in2

Yasushi Kanai, Kazunori Hirasawa, Toshio Tsukamoto, Kazuetsu Yoshida, Simon John Greaves, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Dynamic recording fields of single-pole-type (SPT) heads, having main pole tip dimensions of 25 × 25 nm at the air bearing surface (ABS), were investigated using a Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis. The recording performance in combination with continuous media and bit-patterned media (BPM) was discussed for areal densities of 1-2 Tbit/in2 using the results of LLG micromagnetic media recording simulations. Trailing and side shields were indispensable and the switching speed of the SPT head did not deteriorate on reducing the area of the main pole tip. The advantage of BPM over continuous media was clear with regard to obtaining a higher areal density.

Original languageEnglish
Pages (from-to)3609-3612
Number of pages4
JournalIEEE Transactions on Magnetics
Volume44
Issue number11 PART 2
DOIs
Publication statusPublished - 2008 Nov

Keywords

  • Bit-patterned media (BPM)
  • Landau-Lifshitz-Gilbert (LLG) micromagnetic analysis
  • Perpendicular magnetic recording
  • Single-pole-type (SPT) heads

ASJC Scopus subject areas

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

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