Skip to main content
SpringerLink
Log in

Dependence of the Dynamic Susceptibility of Superparamagnetic Particles on the Strength of a Constant Magnetic Field Perpendicular to the Direction of Particle Easy Magnetization

  • Physics of Magnetic Phenomena
  • Published:
Russian Physics Journal Aims and scope

Abstract

The dynamic magnetic susceptibility of single-domain iron particles with magnetic anisotropy in the form of the direction of easy magnetization is calculated under conditions of stochastic resonance with allowance for a constant magnetic field perpendicular to the direction of particle easy magnetization. Calculations are carried out in the approximation of discrete orientations based on the guiding equation for the Kramers above-the-barrier transition rates of the particle magnetic moment vector. It is demonstrated that changing the constant field strength, the internal noise level in the system can be controlled, for example, to obtain a maximum response to an external radio-frequency perturbation.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

REFERENCES

  1. W. E. Brown, Phys. Rev., 130, 1677–1686 (1963).

    Article  Google Scholar 

  2. E. K. Sadykov and A. G. Isavnin, Fiz. Tverd. Tela, 36, 3473–3475 (1994).

    Google Scholar 

  3. B. McNamara and K. Wiesenfeld, Phys. Rev., A39, 4854–4869 (1989).

    Google Scholar 

  4. E. K. Sadykov and A. G. Isavnin, Fiz. Tverd. Tela, 38, 2104–2112 (1996).

    Google Scholar 

  5. E. K. Sadykov, A. G. Isavnin, and A. B. Boldenkov, Fiz. Tverd. Tela, 40, 516–518 (1998).

    Google Scholar 

  6. A. G. Isavnin, Fiz. Tverd. Tela, 43, 1216–1219 (2001).

    Google Scholar 

  7. A. G. Isavnin, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 11, 73–77 (2002).

  8. I. Abu-Aljarayesh, A. Bayrakdar, A. Yusuf, and H. Abu-Satia, J. Appl. Phys., 73, 6970–6972 (1993).

    Article  Google Scholar 

  9. W. Wernsdorfer, E. Bonet Orozco, K. Hasselbach, et al., Phys. Rev. Lett., 78, 1791–1794 (1997).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Kamsk State Polytechnic Institute, Russia

    A. G. Isavnin

Authors
  1. A. G. Isavnin
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 64–68, May, 2005.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Isavnin, A.G. Dependence of the Dynamic Susceptibility of Superparamagnetic Particles on the Strength of a Constant Magnetic Field Perpendicular to the Direction of Particle Easy Magnetization. Russ Phys J 48, 511–515 (2005). https://doi.org/10.1007/s11182-005-0160-8

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11182-005-0160-8

Keywords

Search

Navigation