Universality classes and crossover scaling of Barkhausen noise in thin films

Abstract

We study the dynamics of head-to-head domain walls separating in-plane domains in a disordered ferromagnetic thin film. The competition between the domain wall surface tension and dipolar interactions induces a crossover between a rough domain wall phase at short length-scales and a large-scale phase where the walls display a zigzag morphology. The two phases are characterized by different critical exponents for Barkhausen avalanche dynamics that are in quantitative agreement with experimental measurements on MnAs thin films.

5 pages, 5 figures

References in corpus (3)

• Non-steady relaxation and critical exponents at the depinning transition
• Dynamic hysteresis from zigzag domain walls
• Barkhausen noise from zigzag domain walls

Cited by in corpus (10)

• Glassy features of crystal plasticity
• Playing with universality classes of Barkhausen avalanches
• Barkhausen noise from precessional domain wall motion
• Universality and the collapse of multifractality in Barkhausen avalanches
• Bloch line dynamics within moving domain walls in 3D ferromagnets
• Statistical properties of Barkhausen noise in amorphous ferromagnetic films
• Edge dislocations in multi-component solid solution alloys: Beyond traditional elastic depinning
• Depinning exponents of thin film domain walls depend on disorder strength
• Protocol dependence for avalanches under constant stress in elastoplastic models
• The effects of external noise on threshold induced correlations in ferromagnetic systems