Improving soft magnetic properties of Mn-Zn ferrite by rare earth ions doping

Mn-Zn ferrites doped with different Sm2O3, Gd2O3, Ce2O3 or Y2O3 were prepared by traditional ceramic technology using industrial pre-sintered powders. A small amount of Sm2O3, Gd2O3, Ce2O3 or Y2O3 can significantly improve the microstructure and magnetic properties. The single spinel phase structure...

Full description

Saved in:
Bibliographic Details
Published in:AIP advances 2018-04, Vol.8 (4), p.047807-047807-6
Main Authors: Zhong, X. C., Guo, X. J., Zou, S. Y., Yu, H. Y., Liu, Z. W., Zhang, Y. F., Wang, K. X.
Format: Article
Language:English
Subjects:
Ceramic powders
Ceramics industry
Coercivity
Core loss
Doping
Gadolinium oxides
Grain size distribution
Grain structure
Magnetic cores
Magnetic permeability
Magnetic properties
Magnetism
Manganese zinc ferrites
Metal ions
Performance enhancement
Permeability
Rare earth compounds
Sintering (powder metallurgy)
Solid phases
Yttrium oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mn-Zn ferrites doped with different Sm2O3, Gd2O3, Ce2O3 or Y2O3 were prepared by traditional ceramic technology using industrial pre-sintered powders. A small amount of Sm2O3, Gd2O3, Ce2O3 or Y2O3 can significantly improve the microstructure and magnetic properties. The single spinel phase structure can be maintained with the doping amount up to 0.07 wt.%. A refined grain structure and uniform grain size distribution can be obtained by doping. For all rare earth oxides, a small amount of doping can significantly increase the permeability and reduce the coercivity and magnetic core loss. The optimized doping amount for Sm2O3 or Gd2O3 is 0.01 wt.%, while for Ce2O3 or Y2O3 is 0.03 wt.%. A further increase of the doping content will lead to reduced soft magnetic properties. The ferrite sample with 0.01 wt.% Sm2O3 exhibits the good magnetic properties with permeability, loss, and coercivity of 2586, 316 W/kg, and 24A/m, respectively, at 200 mT and 100 kHz. The present results indicate that rare earth doping can be suggested to be one of the effective ways to improve the performance of soft ferrites.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4993645