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    Micromagnetic Studies ontheCoercive Force ofHardMagnets Using aOne-Layer Defect Model
    Akimasa SakumaShigeru Takeda
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    Abstract:
    The coercive forces ofhard magnets arecalculated using a one-layer de¬ fect modelbased onmicromagnetism. Nuclea¬ tionprocesses are classified intothreetypes depending on thedefect parameters. Forcer¬ tain values oftheparameters, thenucleation field hasa minimumvalue. Theorigin ofthe decreasing coercive force anda methodfor increasing the coercive forceare also discussed.
    Topics:
    Magnetic Properties and Applications
    Magnetic Properties of Alloys
    Superconducting Materials and Applications
    Micromagnetic Studies on the Coercive Force of Hard Magnets Using a One-Layer Defect Model
    Journal of the Magnetics Society of Japan (1993)
    Akimasa SakumaShigeru TakedaM. Endoh
    The coercive forces of hard magnets are calculated using one-layer defect model based on micromagnetism. The nucleation processes are classified into three types depending on the defect parameters. For certain values of the parameters, the nucleation field has a minimum value. The origin of the decreasing coercive force and a method of increasing the coercive force are also discussed.
    Micromagnetics
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