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Shape effect on magnetization reversal in chains of interacting ferromagnetic elements

Appl. Phys. Lett. 82, 3716 (2003); doi:10.1063/1.1577808

Issue Date: 26 May 2003

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V. Novosad, M. Grimsditch, J. Darrouzet, J. Pearson, and S. D. Bader
Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439

V. Metlushko
Department of Electrical & Computer Engineering, University of Illinois at Chicago, Illinois 60607

K. Guslienko
Seagate Research, Pittsburgh, Pennsylvania 15222

Y. Otani
RIKEN Frontier Research System, Saitama 3561-0198, Japan

H. Shima and K. Fukamichi
Department of Materials Science, Tohoku University, Sendai 980-8579, Japan
The magnetization reversal in the chains of submicron square- and disk-shaped Permalloy dots with lateral size of 800 nm, thickness of 50 nm and variable inter dot distance was investigated by using the magneto-optical Kerr effect technique, magnetic force microscopy and micromagnetic modeling. We have found that the particle shape strongly affects the characteristic switching fields of well-separated dots, and has almost no influence on strength of inter dot interaction in chains of magnetostatically coupled elements. ©2003 American Institute of Physics.
History: Received 3 December 2002; accepted 21 March 2003
Permalink: http://link.aip.org/link/?APPLAB/82/3716/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.60.Jk
    Magnetization reversal mechanisms
  • 75.50.Bb
    Ferromagnetism of Fe and its alloys
  • 75.75.+a
    Magnetic properties of nanostructures
  • 75.50.Tt
    Fine-particle magnetic systems; nanocrystalline materials
  • 75.70.Cn
    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
  • 78.20.Ls
    Magnetooptical effects (bulk materials/thin films)
  • 68.37.Rt
    Magnetic force microscopy (MFM) of surfaces, interfaces and thin films
  • 75.30.Et
    Exchange and superexchange interactions in magnetically ordered materials
  • YEAR: 2003

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (18)
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