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 N2. They show high permeability of 820 at 10 kHz through 1 MHz and an electric resistivity of 50 Ω cm at 1 kHz.

Diffusion coefficient of vacancies and jump length of electrons in Co1−xZn x Fe2O4 ferrites

“…However, CoZnFe 2 O 4 is not completely inverse, and the degree of inversion depends on the heat treatment. The spinel ferrite Mg Fe 2-x Cr x O 4 was also studied by Mossbauer spectroscopy over a wide range of temperatures [4]. The spinel ferrites Zn x Ni 5/3-x Fe 1 Sb 1/3 O 4 were also studied [5] by Mossbauer spectroscopy over a wide range of temperatures.…”

Development of Non-Shrinking Soft Ferrite Composition Useful for Microinductors Applications

“…It was reported that electromagnetic properties of the multilayer chip ferrite components [9,18,[20][21][22] are influenced by the internal stresses and the diffusion of Ag buried in ferrite [23][24][25][26][27][28][29][30]. As the magnetostriction of MgCuZn ferrites is lower than that of NiCuZn ferrites, it was expected that the multilayer chip inductor using MgCuZn ferrite [31] would show higher magnetic properties than that using NiCuZn ferrite.…”