Abstract
A scaling relationship between switching fields, of which remanent coercivity is a prominent example, and measurement time is derived. The energy barrier to thermal fluctuations is found to exhibit a (3/2-power dependence on the difference between the applied field and the nonthermally assisted switching field. This (3/2-power dependence contrasts with the 2-power dependence which has been widely assumed in the literature. Implications for magnetic viscosity and the orientational dependence of the time-dependent switching field in certain small, isolated particles are also discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 457-460 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 63 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1989 |
Bibliographical note
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