Title :
DC susceptibility of interacting single domain particles
Author :
Elik, I. ; Chang, Ching-Ray
Author_Institution :
Dept. of Phys., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
11/1/1995 12:00:00 AM
Abstract :
The thermal relaxation process in interacting systems is characterized by transitions between metastable configurations of the entire array. Their rates are identified here for sample small particle arrays and the nonequilibrium initial DC susceptibility χ(t) is found from a master equation. The function χ(t) has multiexponential time dependence and may exhibit nonuniform approach to equilibrium
Keywords :
magnetic domains; magnetic particles; magnetic susceptibility; master equation; DC susceptibility; interacting single domain particles; master equation; metastable configurations; multiexponential time dependence; nonuniform approach to equilibrium; small particle arrays; thermal relaxation process; Couplings; Equations; Magnetic anisotropy; Magnetic susceptibility; Magnetization; Magnetostatics; Metastasis; Perpendicular magnetic anisotropy; Physics; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
