High performance CoPtCrO single layered perpendicular media with no recording demagnetization

Soichi Oikawa, Akihiko Takeo, Takashi Hikosaka, Yoichiro Tanaka

Research output: Contribution to journalConference articlepeer-review

71 Citations (Scopus)


High coercivity CoPtCrO single layered perpendicular medium has been newly developed in order to solve the recording demagnetization problem, and exhibited the excellent recording characteristics with ring type head; the areal recording density being higher than 11 Gbit/inch2. The high Pt content and the segregation structure with thick oxygen-rich boundaries led this perpendicular medium to high coercivity, steep hysteresis slope at Hc, and high squareness at the same time. These features were found to be primary factors for both high SNR and suppressed recording demagnetization.

Original languageEnglish
Pages (from-to)2393-2395
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 I
Publication statusPublished - 2000 Sep
Externally publishedYes
Event2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada
Duration: 2000 Apr 92000 Apr 12


  • CoPt
  • Oxygen segregation
  • Perpendicular media
  • Recording demagnetization

ASJC Scopus subject areas

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


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