Head design scheme for perpendicular recording with single layered media

E. Kim, Y. H. Im, Y. Kim, Kyoung Jin Lee, K. Lee, N. Y. Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

For ultra high areal recording density, we suggest the perpendicular recording scheme with ring head and single layered media for easy implementation. To improve the perpendicular head field and its gradient, conventional ring head is modified by cutting the top pole edge. Head field was calculated with nonlinear finite element method. The write process was simulated with micromagnetics using the calculated head field of two heads (original and modified) at each magnetic grain of recording disk, instead of using Karlqvist head field. Both simulated and measured MFM images show that the transition of modified head is clearer than original one. Also, TAA and SNR of modified head are higher than results of original head. With simple modification, currently used ring head can be easily applied to high density perpendicular recording HDD system.

Original languageEnglish
Pages (from-to)1382-1385
Number of pages4
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
Publication statusPublished - 2001 Jul 1
Externally publishedYes

Keywords

  • Head design
  • Micromagnetics
  • Perpendicular magnetic recording
  • Ring head

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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