Magnetization Mechanism and Domain Structure of Multidomain Particles

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Abstract
The free energy of a two-domain cube of iron is considered with and without an applied magnetic field. It is shown that the two-domain configuration may exist only beyond a certain critical size (200 A), that the wall characteristics are size dependent and that their values are substantially different from the values assumed in bulk material. Moreover, magnetization by wall motion is shown to be a "hard process."

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