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Hysteresis properties of sintered Sm Co5permanent magnets

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3 Author(s)
Alff, E. ; Société d́Etudes et de Recherches Magnétiques, Saint-Martin d́Hères, France ; Givord, D. ; Haberer, J.P.

The magnetic properties of individual SmCo5particles have been extensively studied in the literature. In the present work, initial magnetization curves and hysteresis loops of sintered SmCo5magnets have been drawn with a hysteresigraph. The observed properties depend on the previous magnetic treatment of the sample. After thermal demagnetization, the initial susceptibility is very high; after dc field demagnetization, it is very weak. The inner hysteresis loops are often unsymmetrical. Results are interpreted by considering the magnets as particle assemblies related together by dipolar interactions.

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Magnetics, IEEE Transactions on  (Volume:9 ,  Issue: 4 )