Effects of interdot dipole coupling in mesoscopic epitaxial Fe(100) dot arrays

Article English OPEN
Hirohata, A. ; Gardiner, S.M. ; Rothman, J. ; Klaui, M. ; Lopez-Diaz, L. ; Chen, Y. ; Cambril, E. ; Rousseaux, F. ; Xu, Y.B. ; Tselepi, M. ; Bland, J.A.C. (2001)
  • Subject:
    arxiv: Condensed Matter::Materials Science | Condensed Matter::Mesoscopic Systems and Quantum Hall Effect

The domain structure and the coercivity of epitaxial Fe(100) circular dot arrays of different diameters and separations have been studied using magnetic force microscopy (MFM) and focused magneto-optical Kerr effect (MOKE). The MFM images of the 1 µm diameter single domain dot arrays show direct evidence of strong interdot dipole coupling when the separation is reduced down to 0.1 µm. The coercivity of the dots is also found to be dependent on the separation, indicating the effect of the interdot dipole coupling on the magnetization reversal process.
  • References (21)
    21 references, page 1 of 3

    [1] F. E. Luborsky, “Development of enlongated particle magnets,” J. Appl. Phys. (Supp.), vol. 32, pp. 171S-183S, 1961.

    [2] J. N. Chapman et al., “Mapping induction distributions by transmission electron-microscopy,” Appl. Phys. Lett., vol. 69, p. 6978, 1991.

    [3] J. G. Zhu et al., “Micromagnetics of small size patterned exchange biased Permalloy film elements,” J. Appl. Phys., vol. 81, p. 4336, 1997.

    [4] R. D. Gomez et al., “Domain configurations of nanostructured Permalloy elements,” J. Appl. Phys., vol. 85, p. 6163, 1999.

    [5] Y. B. Xu et al., “Magnetoresistance of a domain wall at a submicron junction,” Phys. Rev. B, vol. 61, p. R14901, 2000.

    [6] R. P. Cowburn et al., “Single-domain circular nanomagnets,” Phys. Rev. Lett., vol. 83, p. 1042, 1999.

    [7] M. Mehn et al., “Nanoscale magnetic domains in mesoscopic magnets,” Science, vol. 272, p. 1782, 1996.

    [8] E. Gu et al., “Micromagnetism of epitaxial Fe(001) elements on the mesoscale,” Phys. Rev. Lett., vol. 78, p. 1158, 1997.

    [9] C. Stamm et al., “Two-dimensional magnetic particles,” Science, vol. 282, p. 449, 1998.

    [10] J. Yu et al., “Micromagnetics of mesoscopic epitaxial Fe(110) elements with nanoshaped ends,” J. App. Phys., vol. 85, p. 5501, 1999.

  • Metrics
    0
    views in OpenAIRE
    0
    views in local repository
    11
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    White Rose Research Online - IRUS-UK 0 11
Share - Bookmark