Magnetic hysteresis loop for ferromagnetic materials
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that Ewing [6] found from his calculations based solely on strong mutual interactions between the magneticmoments … (6) showing hysteresis is given in … Although the Langevin equation works quite well for describing the magnetization of a para- magnet, the modified Langevin …
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Magnetic hysteresis occurs when an external magnetic field is applied to a ferromagnet such as iron and the atomic dipoles align themselves with it. Even when the field is removed, part of the alignment will be retained: the material has become magnetized. Once magnetized, the magnet will stay magnetized indefinitely.
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