J. Phys. IV France 07 (1997) C1-125-C1-126
Grain Size Dependency of the Steinmetz Coefficient of Soft Ferrite Power LossesJ.G. Boerekamp and E.G. Visser
Philips Components, Central Innovation Magnetic Products, P.O. Box 218, 5600 Eindhoven, Building BE2, The Netherlands
A comparison was made between the power loss behaviour of MnZn ferrites having average grain sizes ranging from 4 to 16 µm. In the finer grains, the power loss at induction levels above 50 mT was observed to rise anomalously, as did the Steinmetz coefficient y. An explanation is given involving irreversible rotational loss in monodomain grains.
© EDP Sciences 1997