Preisach Hysteresis Model
Ferromagnetic memory — superposition of elementary hysterons
Parameters
Applied field H:
0.0
Distribution width σ:
0.4
Mean coercivity H_c:
0.5
N hysterons:
400
Sweep Field
Clear Loop
State
Field H
—
Magnetization M
—
Remanence M_r
—
Coercivity H_c*
—
Theory
M(H) = ∫∫ μ(α,β) γ̂_{αβ}[H] dαdβ
Hysteron: γ̂_{αβ} = ±1 (α < β)
μ(α,β) = Preisach density
Memory: staircase boundary in (α,β) plane