Abstract
Based upon our previous study on the formation of a large negative "nucleation field" in CoCrPt/Ti single layered perpendicular media (I.S. Lee et al., J. Appl. Phys. 85 (1999) 6133), dependency of magnitude of negative nucleation field on CoCrPt/Ti with variation of Pt content and CoCrPt thickness was investigated. Difference in the degree of Cr segregation with the film thickness for a given film composition was also discussed. It was found that Cr segregation behavior might be closely associated with the nature of residual stress in the magnetic layer. When there was tensile stress in the film, Cr segregation was not significant. To understand the origin of the negative nucleation field, micromagnetic simulation was performed and it was found that a normalized nucleation field, Hn/Ku, linearly depended upon Ku/Ms2 and weakly depended on exchange parameter among grains when uniform grain size was assumed. Read/write simulation results show that a high negative nucleation field is effective in increasing the signal output.
| Original language | English |
|---|---|
| Pages (from-to) | 297-304 |
| Number of pages | 8 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 235 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2001 Oct |
| Event | Proceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan Duration: 2000 Oct 23 → 2000 Oct 26 |
Keywords
- Cr segregation mode
- Negative nucleation field
- Signal output
- Thickness effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics