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Journal of Applied Physics / Volume 108 / Issue 1 / ARTICLES / Magnetism and Superconductivity

J. Appl. Phys. 108, 013906 (2010); doi:10.1063/1.3457037 (4 pages)

Magnetization reversal of bit patterned media: Role of the angular orientation of the magnetic anisotropy axes

P. Krone1, D. Makarov1, M. Albrecht1, and T. Schrefl2

1Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
2St. Pölten University of Applied Sciences, 3100 St. Pölten, Austria

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(Received 23 March 2010; accepted 27 May 2010; published online 12 July 2010)

Micromagnetic modeling was performed to study the influence of an angular dispersion of the magnetic anisotropy axis on the reversal behavior of tilted bit patterned media with an areal density of about 1 Tbit/in.2. Thereby, the angular dispersion was realized by having the anisotropy axes of the individual bits lying on the surface of a cone with a specific opening angle. In addition, a distribution of the magnetic anisotropy value within the array of magnetic nanostructures was taken into account. The effect of the angular variation in the magnetic anisotropy orientation on the switching field distribution was investigated. Two optimized geometries were suggested in order to keep the switching field distribution as narrow as possible: (1) uniaxial perpendicular bits with the magnetic field applied under an angle of 45° and (2) tilting the anisotropy axis to about 45°–75° and applying a perpendicular magnetic field. However, mixing both situations results in a drastic increase in the switching field distribution.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. THE MODEL
  3. RESULTS AND DISCUSSION
    1. Influence of the tilt angle θ on HS and SFD
    2. Influence of the applied field angle on HS and SFD
  4. SUMMARY

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KEYWORDS and PACS

Keywords

magnetic anisotropy, magnetic switching, magnetisation reversal, micromagnetics, nanomagnetics

PACS

  • 75.78.Cd

    Micromagnetic simulations

  • 75.60.Jk

    Magnetization reversal mechanisms

  • 75.50.Tt

    Fine-particle systems; nanocrystalline materials

  • 75.30.Gw

    Magnetic anisotropy

  • 75.75.-c

    Magnetic properties of nanostructures

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.3457037

PUBLICATION DATA

ISSN:

0021-8979 (print)  
1089-7550 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    O. Hellwig, J. K. Bosworth, E. Dobisz, D. Kercher, T. Hauet, G. Zeltzer, J. D. Risner-Jamtgaard, D. Yaney, and R. Ruiz, Appl. Phys. Lett. 96, 052511 (2010)APPLAB000096000005052511000001.

    B. D. Terris, L. Folks, D. Weller, J. E. E. Baglin, A. J. Kellock, H. Rothuizen, and P. Vettiger, Appl. Phys. Lett. 75, 403 (1999)APPLAB000075000003000403000001.

    G. M. McClelland, M. W. Hart, C. T. Rettner, M. E. Best, K. R. Carter, and B. D. Terris, Appl. Phys. Lett. 81, 1483 (2002)APPLAB000081000008001483000001.

    O. Hellwig, A. Berger, T. Thomson, E. Dobisz, Z. Z. Bandic, H. Yang, D. S. Kercher, and E. E. Fullerton, Appl. Phys. Lett. 90, 162516 (2007)APPLAB000090000016162516000001.

    T. Thomson, G. Hu, and B. D. Terris, Phys. Rev. Lett. 96, 257204 (2006).

    J. Moritz, L. Buda, B. Dieny, J. Nozieres, R. J. M. van de Veerdonk, T. M. Crawford, and D. Weller, Appl. Phys. Lett. 84, 1519 (2004)APPLAB000084000009001519000001.

    P. Krone, D. Makarov, T. Schrefl, and M. Albrecht, J. Appl. Phys. 106, 103913 (2009)JAPIAU000106000010103913000001.

    M. E. Schabes and H. N. Bertram, J. Appl. Phys. 64, 1347 (1988)JAPIAU000064000003001347000001.

    K. R. Coffey, T. Thomson, and J. -U. Thiele, J. Appl. Phys. 92, 4553 (2002)JAPIAU000092000008004553000001.

    K. R. Coffey, T. Thomson, and J. -U. Thiele, J. Appl. Phys. 93, 8471 (2003)JAPIAU000093000010008471000001.


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