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Magnetic Properties of FePt Nanoparticles Annealed With NaCl.
- Source :
-
IEEE Transactions on Magnetics . Oct2006, Vol. 42 Issue 10, p3066-3068. 3p. 3 Graphs. - Publication Year :
- 2006
-
Abstract
- FePt nanoparticles have the potential to extend the data density of magnetic recording beyond 1 Tbit/in². The phase transformation from low anisotropy, face-centered cubic to face-centered tetragonal with high anisotropy is essential and complex. The samples measured in this paper were annealed in a mixture with fine ground (<20 μm) NaCI. The switching field distributions and activation volumes of two different sizes of particles are presented, 4 and 15 nm. The samples exhibit complex structural behaviour, demonstrating how difficult it is to obtain uniform nanoparticles. We find that the 4-nm particles reverse coherently whereas the 15 nm do not due to inhomogeneous crystallinity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 42
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 22739650
- Full Text :
- https://doi.org/10.1109/TMAG.2006.880153