High field-gradient design of single-pole write-head with planar pole structure

Kiyoshi Yamakawa, Hiroaki Muraoka, Kinya Fudano, Simon John Greaves, Yuichi Ohsawa, Kazuyuki Ise, Yoshihisa Nakamura

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


A planar single-pole head generating a large head field was investigated to improve head field distribution with a steep field gradient. Good writing performance is generally difficult for a narrow track writer. This work presents a novel design of the main pole shape, the three-step-slope, to achieve a high gradient and strong write head field for terabit recording. Furthermore, the medium design was investigated to increase head-to-medium interaction for achieving a high field gradient and narrow field distribution. A soft guard band in the recording layer and a cross-track groove on the SUL surface were effective for improving the field gradient.

Original languageEnglish
Pages (from-to)730-737
Number of pages8
JournalIEEE Transactions on Magnetics
Issue number3 PART 1
Publication statusPublished - 2010 Mar


  • Field gradient
  • Index Terms-Cross-track grooved SUL
  • Shielded planar head
  • Soft guard band
  • Three-step-tapered pole


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