Hysteresis properties of sintered Sm Co5permanent magnets |
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Authors: | Alff E Givord D Haberer J |
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Affiliation: | Société d?Etudes et de Recherches Magnétiques, Saint-Martin d?Hères, France; |
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Abstract: | 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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