Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1999-08-11
Physica A 270, 125 (1999)
Physics
Condensed Matter
Statistical Mechanics
Revtex, 4 PostScript figures
Scientific paper
10.1016/S0378-4371(99)00143-0
We study Barkhausen noise in a diluted two-dimensional Ising model with the extended domain wall and weak random fields occurring due to coarse graining. We report two types of scaling behavior corresponding to (a) low disorder regime where a single domain wall slips through a series of positions when the external field is increased, and (b) large disorder regime, which is characterized with nucleation of many domains. The effects of finite concentration of nonmagnetic ions and variable driving rate on the scaling exponents is discussed in both regimes. The universal scaling behavior at low disorder is shown to belong to a class of critical dynamic systems, which are described by a fixed point of the stochastic transport equation with self-consistent disorder correlations.
No associations
LandOfFree
Dynamic criticality in driven disordered systems: Role of depinning and driving rate in Barkhausen noise does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamic criticality in driven disordered systems: Role of depinning and driving rate in Barkhausen noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic criticality in driven disordered systems: Role of depinning and driving rate in Barkhausen noise will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-619933