Realization of 52.5 Gb/in2 perpendicular recording

Hisashi Takano, Yasutaka Nishida, Atsuko Kuroda, Hideki Sawaguchi, Yuzuru Hosoe, Takashi Kawabe, Hajime Aoi, Hiroaki Muraoka, Yoshihisa Nakamura, Kazuhiro Ouchi

Research output: Contribution to journalConference articlepeer-review

33 Citations (Scopus)


The potential of perpendicular recording system for realizing 52.5 Gb/in2 was clarified. To realize a recording density of over 50Gb/in2, a quarter-micron-track-width perpendicular head consisting of an SPT writer and an advanced GMR reader was developed. A low-noise and thermally stable double-layered medium and a signal processing technique suitable for perpendicular recording channel were also developed. At the same time, high frequency write characteristics at around 60MB/s as well as the acceptable thermal stability characteristics were also confirmed at a room temperature.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Issue number1-3
Publication statusPublished - 2001 Oct
EventProceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan
Duration: 2000 Oct 232000 Oct 26


  • Double-layered medium
  • SPT writer
  • Signal processing
  • Thermal stability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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