Hysteresis and imperfection sensitivity in small ferromagnetic particles. (English) Zbl 0836.73060

Summary: The classical results of E. C. Stoner and E. P. Wohlfarth [Philos. Trans. R. Soc. Lond., Ser. A 240, 599–644 (1948)] for the prediction of hysteresis loops in small ferromagnetic particles are extended to specimens of non-ellipsoidal shape, and shown to be a consequence of micromagnetics. The insensitivity to surface roughness is proposed as a possible explanation of the high coercivity behavior of small particles.


74A60 Micromechanical theories
74M25 Micromechanics of solids
74S30 Other numerical methods in solid mechanics (MSC2010)
74P10 Optimization of other properties in solid mechanics
82D40 Statistical mechanics of magnetic materials
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