Abstract
The magnetic properties, microstructure and the recording performances of CoCrPt-(Ta, B)/TiCr perpendicular magnetic recording media were studied in conjunction with the effect of thermal agitation. The addition of Ta or B to CoCrPt media significantly improves its low noise performance, mainly due to the reduction of grain size and intergranular magnetic interactions. However, adding Ta or B also reduces the value of perpendicular magnetic anisotropy, Ku, especially in the initial growth layer, resulting in the degradation of thermal stability. In order to achieve high thermal stability without degrading the low noise performance of these media, an Mr/Ms value of nearly 1.0 is required. This may be achieved by suppressing of the reduction of Ku and the reducing intergranular magnetic interactions, whilst maintaining their small grain size.
Original language | English |
---|---|
Pages (from-to) | 1595-1598 |
Number of pages | 4 |
Journal | IEEE Transactions on Magnetics |
Volume | 37 |
Issue number | 4 I |
DOIs | |
Publication status | Published - 2001 Jul 1 |
Event | 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11 |
Keywords
- CoCrPt-(Ta, B)
- Media noise performances
- Microstructure
- Perpendicular recording media
- Thermal agitation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering