Self-Organized Critical Behavior in a Domain Wall Dynamics Model Describing Barkhausen Effect.
Abstract
A simple domain wall dynamical model, incorporating a normal distribution of pinning strengths on a simple cubic lattice of pinning sites, a nearest neighbor elastic interaction, and demagnetization effects with a simple dynamical rule, yields a succession of fractal scaling structures as the applied field is increased. Furthermore, each domain wall configuration in the succession supports size effect cutoff power law distributions of avalanches (i.e., Barkhausen noise pulses) when perturbed. The size effect parameters correlate with the ranges of fractal scaling.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA307745
Entities
People
- Lawrence V. Meisel
Organizations
- United States Army Armament Research, Development and Engineering Center