Abstract
The alloying reaction of Fe and Pt and the ordering reaction in nanometer-sized FePt particles was observed by in-situ TEM observation. At the initial stage of annealing, Fe started to dissolved into the Pt particles, then the ordering reaction started to occur simultaneously. These two reactions continued until all the Fe dissolved into the Pt during the annealing. The large magnetic coercivities as large as 815 kA/m were explained by the disappearance of the three-variants domains and the formation of crystallographic single domains.
Original language | English |
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Pages (from-to) | 1389-1393 |
Number of pages | 5 |
Journal | Scripta Materialia |
Volume | 44 |
Issue number | 8-9 |
DOIs | |
Publication status | Published - 2001 May 18 |
Externally published | Yes |
Keywords
- Electron-beam deposition
- Ferromagnetic hysteresis
- Nanoparticles
- Ordering
- Transmission electron microscopy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys