Discontinuous domain wall jumps produce the Barkhausen noise
H = 0.00 | M = 0.00
The Barkhausen effect describes the sudden, discontinuous jumps in magnetization as a ferromagnet is magnetized.
Domain walls pin at defects and jump irreversibly when the applied field overcomes pinning energy,
producing avalanches of domain switching with a power-law size distribution characteristic of self-organized criticality.