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ROSARIO NUNZIO MANTEGNA

Stochastic resonance in magnetic systems described by Preisach hysteresis model

  • Authors: Mantegna, R.; Spagnolo, B.; Testa, L.; Trapanese, M.
  • Publication year: 2005
  • Type: Articolo in rivista (Articolo in rivista)
  • Key words: Stochastic resonance ; dipoles ; magnetization ; magnetic moment
  • OA Link: http://hdl.handle.net/10447/22756

Abstract

We present a numerical study of stochastic resonance in magnetic systems described by Preisach hysteresis model. It is shown that stochastic resonance occurs in these systems. Specifically, the signal-to-noise ratio sSNRd and the signal amplification sSAd present a maximum as a function of noise intensity. We also found that the hysteresis loops, dynamically described by the system, are strongly modified near the maxima of SNR and of SA.