Microstructural characterization of L1 FePt/MgO nanoparticles with perpendicular anisotropy | Zendy

Y. Zhang | Zendy; Jun Wan | Zendy; V. Skumryev | Zendy; S. Stoyanov | Zendy; Yandong Huang | Zendy; G. C. Hadjipanayis | Zendy; D. Weller | Zendy

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Microstructural characterization of L1 FePt/MgO nanoparticles with perpendicular anisotropy

Author(s) -

Y. Zhang,

Jun Wan,

V. Skumryev,

S. Stoyanov,

Yandong Huang,

G. C. Hadjipanayis,

D. Weller

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1827348

Subject(s) - materials science , nanoparticle , transmission electron microscopy , coercivity , microstructure , substrate (aquarium) , high resolution transmission electron microscopy , condensed matter physics , magnetic anisotropy , nanotechnology , particle (ecology) , composite material , magnetization , magnetic field , oceanography , physics , quantum mechanics , geology

L10 FePt nanoparticles with perpendicular magnetic anisotropy were fabricated on a heated MgO substrate by using an atomic deposition technique. The microstructure of the FePt nanoparticles was studied by transmission electron microscopy and high resolution transmission electron microcopy. The as-made L10 FePt nanoparticles are isolated and have a faceted morphology with a bimodal distribution of particle size as small as 2.5 nm. A semicoherent atomic interface between the FePt nanoparticles and the MgO substrate is observed. The room temperature coercivity of these FePt nanoparticles was measured via both superconducting quantum interference device and magneto-optical Kerr effect techniques and found to be as high as 6.7 kOe

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