Abstract
A simple torque-based method for calculating the transient behavior of temperature-dependent magnetic anisotropy is introduced. Using this method we obtain several physical quantities at finite temperature, including effective anisotropy, anisotropy field, and their fluctuations, that are crucial to heat-assisted magnetic recording (HAMR). We show that use of a composite grain that includes a high Curie temperature soft layer reduces the anisotropy fluctuations.
| Original language | English (US) |
|---|---|
| Article number | 6332971 |
| Pages (from-to) | 3188-3191 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 48 |
| Issue number | 11 |
| DOIs | |
| State | Published - Oct 29 2012 |
Keywords
- Anisotropy
- Composite media
- Heat-assisted magnetic recording
- Landau-Liftshitz-Gilbert
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