W.P. Risk, C.T. Rettner, et al.
Review of Scientific Instruments
X-ray diffraction, small angle neutron scattering, and magnetometry were used to investigate chemically ordered, self-assembled FePt nanoparticle arrays with high magnetic anisotropy. Thin assemblies of polyethylenimine (PEI) and 4 nm Fe 58Pt 42 nanoparticles were analyzed. A metallic magnetic core surrounded by a weakly magnetic or nonmagnetic shell resulted from annealing FePt nanoparticles in the PEI-FePt assembly. The L1 0 chemical ordering and FePt nanoparticles having high coercivity were derived from high temperature annealing.
W.P. Risk, C.T. Rettner, et al.
Review of Scientific Instruments
B.J. Factor, T.P. Russell, et al.
Physical Review Letters
T.C. Huang, M. Toney, et al.
Thin Solid Films
A. Grill, V.V. Patel, et al.
Journal of Applied Physics