Abstract
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 language | English (US) |
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Pages (from-to) | 1979-1981 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 38 |
Issue number | 5 I |
DOIs | |
State | Published - Sep 2002 |
Event | 2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: Apr 28 2002 → May 2 2002 |
Keywords
- Crystallography
- Granular media
- Perpendicular recording
- Ru UL
- Ta SL
- Thermal stability
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering