抄録
Magnetic properties of Mn-Zn ferrites having fine grain size have been studied. The sintered fcrrite(sample A) with grain size as small as 1μm and resistivity of 2Ωm was prepared from fine powder which was broken down with media agitation milling. From the results of the measurement of core loss, the hysteresis loss of sample A was higher as compared with that of the ferrite(sample B) with grain size of 3μm and with resistivity of 10Ωm. In the high frequency range the core loss of sample A was lower than that of sample B, because of its lower eddy current loss and redidual loss.
