Microstructure and Temperature Dependence of Magnetic Properties of MnZnTiSn Ferrites for Power Applications

Author

Ji, Haining ; Lan, Zhongwen ; Yu, Zhong ; Xu, Zhiyong

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

46

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

974

Lastpage

978

Abstract

MnZnTiSn ferrties, prepared via the conventional ceramic process, by sintering at 1360??C in N₂-O₂ atmosphere with 4% oxygen, were characterized in terms of microstructures, magnetic properties and dc resistivity. Experimental results showed that TiSn-substitution remarkably improved magnetic properties and temperature stabilities of the MnZn ferrite ceramics. The effects of Ti⁴⁺ and Sn⁴⁺ substitution had certain synergistic effect. The sample, substituted with 0.2 mol% Ti⁴⁺and 0.1 mol% Sn⁴⁺, possessed maximum density and initial permeability, together with minimum core loss, residual magnetic flux density and coercive force.

Keywords

coercive force; crystal microstructure; electrical resistivity; ferrites; magnetic flux; magnetic permeability; manganese compounds; sintering; tin compounds; titanium compounds; zinc compounds; MnZnTiSnFe₂O₃; ceramic process; coercive force; dc resistivity; ferrites; initial permeability; microstructure; power applications; residual magnetic flux density; sintering; temperature 1360 degC; temperature dependence; temperature stability; MnZn ferrites; switched mode power supplies; tin; titanium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2037954

Filename

5353723