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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.

MSC:

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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