JETP Letters

, Volume 86, Issue 7, pp 465–469 | Cite as

Fractal magnetic microstructure in the (Co41Fe39B20)x(SiO2)1−x nanocomposite films

  • R. S. Iskhakov
  • S. V. Komogortsev
  • E. A. Denisova
  • Yu. E. Kalinin
  • A. V. Sitnikov
Article

Abstract

Magnetostructural methods are applied to determine the exchange bond percolation limit in (Co41Fe39B20)x(SiO2)1−x nanocomposites (x c = 0.30 ± 0.02), which separates the phase plane along the metal concentration axis into a superparamagnetic region and a ferromagnetic region. It is shown that, with respect to the singularities of the magnetization up to the magnetization saturation curves, the ferromagnetic region is further subdivided into three regions differing in the character of the spatial propagation of the magnetization ripples or in the magnetic correlation function characteristics. The fractal dimension of the nanocomposite magnetic microstructure near the percolation threshold is determined.

PACS numbers

75.30.Gw 75.50.Kj 75.60.-d 

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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • R. S. Iskhakov
    • 1
  • S. V. Komogortsev
    • 1
  • E. A. Denisova
    • 1
  • Yu. E. Kalinin
    • 2
  • A. V. Sitnikov
    • 2
  1. 1.Kirensky Institute of Physics, Siberian BranchRussian Academy of SciencesAkademgorodok, KrasnoyarskRussia
  2. 2.Voronezh State Technical UniversityVoronezhRussia

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