Abstract
We have studied the magnetization reversals of FePt L10 particles. Lithographically fabricated single FePt particles and well isolated epitaxial FePt L10 nanoparticles have been investigated for a wide range of particle diameters D. Careful analyses of the experiments have revealed that for particles larger than 20 nm the magnetization reversal behaviors are governed by either nucleation or expansion of a reversed domain depending on the temperature, and the coherent rotation mode becomes dominant for D < 20 nm.
Original language | English |
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Pages (from-to) | 395-401 |
Number of pages | 7 |
Journal | Scripta Materialia |
Volume | 53 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2005 Aug |
Externally published | Yes |
Keywords
- Iron alloys
- Magnetic anisotropy
- Magnetic recording
- Magnetic thin films
- Platinum-group
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys