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Investigation of the thermal remagnetization in sintered hard magnets

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3 Author(s)
Jahn, L. ; Inst. of Appl. Phys., Tech. Univ. Dresden, Germany ; Schumann, R. ; Ivanov, V.

The maximum thermal remagnetization (TR) after dc-demagnetization was studied at sintered RE/T hard magnets and at barium ferrite. We found very large TR-effects for SmCo5, large effects for hard ferrites, medium for NdFeB and a very low effect for Sm2Co 17 magnets. The experimental results are interpreted on the basis of a theory taking into account the local fluctuations of the internal magnetic field as well as the internal demagnetization effects. The relevant model parameters were estimated for SmCo5 and barium ferrite

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Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 4 )