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Quantum spin tunneling of magnetization in small ferromagnetic particles

Author

Listed:
  • Galetti, D.
  • Pimentel, B.M.
  • Lima, C.L.
  • Silva, E.C.

Abstract

An approach is presented that can also account for the description of small ferromagnetic particle magnetization tunneling. An estimate of the saturation value of an external applied magnetic field along the easy axis is obtained. An analytic expression for the tunneling factor in the absence of an external magnetic field is deduced from the present approach that also allows one to obtain the crossover temperature characterizing the regime where tunneling is dominated by quantum effects.

Suggested Citation

  • Galetti, D. & Pimentel, B.M. & Lima, C.L. & Silva, E.C., 2009. "Quantum spin tunneling of magnetization in small ferromagnetic particles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(7), pages 1105-1110.
    • Handle: RePEc:eee:phsmap:v:388:y:2009:i:7:p:1105-1110
    DOI: 10.1016/j.physa.2008.12.044
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