Characterization and Low‐Temperature Sintering of Reactive Mn‐Zn Ferrite Powder

Abstract

Highly sinterable Mn‐Zn ferrite powder consisting of sub‐micrometer‐size particles with structural distortion has been prepared by grinding a coprecipitated powder with a media agitation mill. Dense pure Mn‐Zn ferrites (>98% of theoretical) with an average grain size of 1.9 μm can be fabricated by heating at 900°C in a stream of N 2 . They show high permeability of 820 at 10 kHz through 1 MHz and an electric resistivity of 50 Ω cm at 1 kHz.