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On the magnetic properties of fine-milled barium and strontium ferrite

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2 Author(s)
H. Richter ; Deutsche Edelstahlwerke AG, Magnetfabrik Dortmund, Dortmund, Germany ; H. Dietrich

The temperature dependence of the specific saturation magnetization of barium and strontium ferrite powders after milling in an attrition mill has been investigated at temperatures between -195°C and the Curie temperature of the ferrites. The experimental results show that the specific saturation magnetization decreases with increasing milling time and that a second, presumably soft-magnetic phase occurs during milling which vanishes during annealing of the powders. The influence of lattice defects introduced by the milling process is discussed.

Published in:

IEEE Transactions on Magnetics  (Volume:4 ,  Issue: 3 )