抄録
Magnetization process in Mn-Zn ferrites has been investigated by analyzing eddy current loss obtained from the relationship between power loss and electrical resistivity. The eddy current loss caused by domain wall displacemen was obtained by subtracting the estimated eddy current loss of uniform magnetization rotation from the experimental eddy current loss. The contribution of the domain wall displacement to the eddy current loss is about 30% at 100kHz and decreases as increasing frequency, followed by vanishing in the frequency range above 600kHz. This result shows that as increasing frequency the magnetic domain is subdivided into smaller size and the uniform magnetization dominates the magnetization process in the high frequency range.
