Abstract
A system including a perpendicular recording head and soft underlayer has been studied using micromagnetic simulation. The model uses cubic cells in the underlayer and pole tips. In our model the total field consists of the magnetostatic interaction field, exchange field, anisotropy field and applied field from the nontip region of the head. A closed form result was used to calculate interaction fields in the soft underlayer and pole tips. The equation of motion for the magnetization is taken to be the Landau-Lifshitz-Gilbert equation. The geometrical configuration of the head and underlayer was varied to optimize for a high perpendicular field component and a high gradient at the media.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1379-1381 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 37 |
| Issue number | 4 I |
| DOIs | |
| State | Published - Jul 2001 |
| Event | 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: Jan 7 2001 → Jan 11 2001 |
Bibliographical note
Funding Information:The authors would like to thank the National Storage Industrial Consortium EHDR Program (partially supported by NSF Award Number ECC-9732369). Any opinions, findings, conclusions, or recommendations expressed herein are those of the author(s) and do not reflect the views of the National Science Foundation or Carnegie Mellon University.
Funding Information:
Manuscript received October 13, 2000. This work was partially supported by NSF Award Number EEC-9732369). The authors are with MINT, University of Minnesota, Minneapolis, MN 55455 USA (e-mail: [email protected]). Publisher Item Identifier S 0018-9464(01)05989-1.
Keywords
- Micromagnetics
- Perpendicular recording
- Soft underlayer