Abstract
Two-dimensional assemblies of octahedral-shaped FePt nanoparticles embedded in a MgO matrix were formed by alternate deposition of FePt and MgO layers on MgO (001) single-crystal substrates with a thermal cycling process. Highly ordered L 10 structure with the [001] orientation perpendicular to the plane and large coercivity of more than 60 kOe were obtained. Cross-sectional transmission electron microscopy observation revealed that the equilibrium crystal shape of L 10 ordered FePt particles was octahedral structure due to the anisotropy of the surface energy. The {111} plane shows the minimum surface energy in the L 10 structure, which is similar to the case of face-centered-cubic structure.
Original language | English |
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Article number | 063117 |
Journal | Applied Physics Letters |
Volume | 88 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2006 Feb |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)