Microstructural characterization of L10 FePt/MgO nanoparticles with perpendicular anisotropy
Zhang, Y. (University of Delaware. Department of Physics and Astronomy)
Wan, J. (University of Delaware. Department of Physics and Astronomy)
Skumryev, Vassil (University of Delaware. Department of Physics and Astronomy)
Stoyanov, S. (University of Delaware. Department of Physics and Astronomy)
Huang, Y. (University of Delaware. Department of Physics and Astronomy)
Hadjipanayis, G. C. (University of Delaware. Department of Physics and Astronomy)
Weller, D. (Seagate Technology (Pittsburgh, Estats Units d'Amèrica))
American Physical Society

Date:	2004
Abstract:	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.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Nanoparticles ; Crystal structure ; Sputter deposition ; Magnetooptic ; Kerr effect ; Transmission electron microscopy ; Magnetic anisotropy ; Nanofabrication ; Superconducting quantum interference devices ; Coercive force ; Thin film structure
Published in:	Applied physics letters, Vol. 85, Issue 22 (December 2004) , p. 5343-5345, ISSN 1077-3118

DOI: 10.1063/1.1827348

4 p, 597.2 KB

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