1Research & Development, Sumitomo Special Metals Co., Ltd., Osaka
Magnetic aftereffect was investigated for semi-columnar Alnico 5, columnar Alnico 5, columnar Alnico 8 and anisotropic Fe-Cr-Co alloys by a nuclear magnetic resonance method. The magnitude of the aftereffect was expressed by the amount of specific loss in remanent magnetic induction during one decade of time S10. The referring time was taken at 10 sec after magnetizing. The magnetic aftereffect depends on the operating point, the temperature and the pre-stabilization by a DC pulse field. These results were compared with N´eel's theory on the aftereffect.
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