抄録
The effect of grain size on residual loss of Mn-Zn ferrites was investigated. Mn-Zn ferrites with grain size of 1.5 to 4.3μm were prepared by sintering a hydrothermally precipitated powder. The residual loss of the Mn-Zn ferrites, which was computatively separated from the core loss, occupies the majority part of the core loss at 1MHz and is reduced with decreasing the grain size. The reduction of residual loss may be contributed to the decrease of a energy loss of damping for domain wall motion caused by subdivision of domain.
