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Variable-domain-size theory of spin ferromagnetism

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1 Author(s)
R. G. Harrison ; Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada

A physically based hysteresis theory incorporating a domain size that depends on the Weiss effective field explains the observed ranges of reversible and irreversible magnetization in the initial-magnetization curve and exterior loop of ferromagnetic materials. The theory applies to materials exhibiting both normal and wasp-waisted exterior loops and agrees well with measured data. It also provides close linkages between magnetization at the quantum scale, domain properties at the mesoscopic scale, and measurements at the macroscopic scale.

Published in:

IEEE Transactions on Magnetics  (Volume:40 ,  Issue: 3 )