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    STUDIA PHYSICA - Issue no. 1 / 2006  
         
  Article:   ISING-TYPE SPIN MODEL FOR BARKHAUSEN NOISE AND MAGNETIZATION PHENOMENA.

Authors:  KATALIN KOVÁCS. 		 
       
         
  Abstract:  A 1D Ising-type model aimed to reproduce megnetization phenomena is presented and studied by Monte-Carlo simulations. Disorder is introduced in the model through pinning centers which act as potential barriers on the ferromagnetic domain boundaries. The model captures and reproduces the accepted properties of domain-wall dynamics. Simulation results indicate that the model is able to reproduce the main characteristics of hysteresis and Barkhausen noise statistics. Jump size distribution, power spectrum, signal area- and duration distribution show scaling behavior in the critical regime, in agreement with the experimental data.  
         
     
         
         
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