Structural studies of L10 FePt nanoparticles
- 16 September 2002
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (12), 2220-2222
- https://doi.org/10.1063/1.1507837
Abstract
We have studied the lattice parameter changes of L 1 0 FePt nanoparticlesannealed to near equilibrium as a function of composition by x-ray diffraction. We have found that the (111) diffraction peak shifts linearly with composition, however, the c parameter mostly changes in the Pt rich compositions and the a parameter mostly changes in the Fe rich compositions with respect to the equiatomic composition. This causes the tetragonality of the L 1 0 structure to be maximized near the Fe 50%/Pt 50% composition. The magnetic properties were measured at room temperature and at 5 K and are correlated to the structural changes occurring as a function of composition.Keywords
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