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Remanent magnetization of Fe1-xCox fine particles

Sebt, S. A ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1002/Pssc.200567128
  3. Publisher: 2006
  4. Abstract:
  5. Fine Fe1-xCox grains with various values of × have been grown via the borohydride method in the presence of different magnetic fields, H0. In this method, the presence of magnetic moments at the bcc lattice sites of iron causes the formation of acicular single domain grains with a nearly 0.2 μm length. The magnetic field, H0, sets the magnetic moment of SD grains parallel to each other and forms some chains of these particles. This is equivalent to the presence of an effective internal field that increases the remanent magnetization, Mr. From the SW model point of view, the remanent magnetization of sample is determined by Boltzman distribution function at the two minimum energies. In fact, it is the thermal fluctuation that is responsible for the reduction of remanent magnetization. Therefore, in addition to the coercivity effect, the presence of an effective internal field also increases the Mr. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA
  6. Keywords:
  7. Boltzman distribution function ; Borohydride method ; Effective internal field ; Thermal fluctuation ; Crystal microstructure ; Iron compounds ; Magnetic field effects ; Magnetic moments ; Mathematical models ; Remanence ; Thermal effects ; Elementary particles
  8. Source: 4th International Conference on Magnetic and Superconducting Materials, MSM'05, Agadir, 5 September 2006 through 8 September 2006 ; Volume 3, Issue 9 , 2006 , Pages 3281-3284 ; 18626351 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/10.1002/pssc.200567128