title: Universal pulse shape scaling function and exponents: critical test for avalanche models applied to Barkhausen noise.
abstract: In order to test if the universal aspects of Barkhausen noise in magnetic materials can be predicted from recent variants of the nonequilibrium zero-temperature Random Field Ising Model, we perform a quantitative study of the universal scaling function derived from the Barkhausen pulse shape in simulations and experiment. Through data collapses and scaling relations we determine the critical exponents tau and 1/sigma nu z in both simulation and experiment. Although we find agreement in the critical exponents, we find differences between theoretical and experimental pulse shape scaling functions as well as between different experiments.
authors: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors: Amit P
authors: AP
authors: Mehta
authors: Andrea C
authors: AC
authors: Mills
authors: Karin A
authors: KA
authors: Dahmen
authors: James P
authors: JP
authors: Sethna