Domain size effects in Barkhausen noise

The possible existence of self-organized criticality in Barkhausen noise is investigated theoretically through a single interface model, and experimen tally from measurements in amorphous magnetostrictive ribbon Metglas 2605TC A under stress. Contrary to previous interpretations in the literature, bot h simulation and experiment indicate that the presence of a cutoff in the a valanche size distribution may be attributed to finite-size effects.