Seedlayer and preheating effects on crystallography and recording performance of CoCrPtB perpendicular media

Min Zheng, Geon Choe, Kenneth E. Johnson, Lan Gao, Sy-Hwang Liou

Research output: Contribution to journalConference article

21 Scopus citations


The effects of seedlayer (SL) and preheating on the crystallographic, magnetic, and recording properties of CoCr18Pt16B4 granular perpendicular magnetic media have been investigated. For the media with Ru as underlayer, although higher preheating improves both coercivity and squareness, the media is much noisier. With introducing Ta SL, Ru (0002)/Co (0002) crystallography is greatly enhanced. High coercivity, unity squareness, and negative nucleation field are achieved even at low preheating without degrading signal-to-noise ratio. In addition, the media is magnetically stable for a wide range of recording density.

Original languageEnglish (US)
Pages (from-to)1979-1981
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 I
Publication statusPublished - Sep 1 2002
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: Apr 28 2002May 2 2002



  • Crystallography
  • Granular media
  • Perpendicular recording
  • Ru UL
  • Ta SL
  • Thermal stability

ASJC Scopus subject areas

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

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