Electromagnetic Properties of Mg-Substituted NiCuZn Ferrites for Multilayer Chip Inductors Applications

Author

Su, Hua ; Zhang, Huaiwu ; Tang, Xiaoli ; Jing, Yulan ; Liu, Baoyuan

Author_Institution

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

Volume

45

Issue

5

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

2050

Lastpage

2052

Abstract

Low-temperature-fired (Ni_0.4-xMg_xCu_0.2Zn_0.4)Fe_1.96O₄ ferrites with x=0, 0.1, 0.2, 0.3, and 0.4, have been synthesized by the conventional mixed oxide method and investigated their electromagnetic properties. Initial permeability is observed to increase with increase in Mg substitutions. At the same time, sintering density, magnetic flux density, remanence, coercivity, and Snoek´s product decrease with increase in Mg substitutions. Furthermore, microstructures and permittivity spectra have no obvious changes with Mg substitutions. Possible mechanisms contributing to the above results are discussed.

Keywords

Snoek effect; coercive force; copper compounds; firing (materials); magnesium compounds; magnetic permeability; nickel compounds; permittivity; remanence; sintering; zinc compounds; (Ni_0.4-xMg_xCu_0.2Zn_0.4)Fe_1.96O₄; Snoek product; coercivity; decrease microstructures; low-temperature-fired ferrites; magnetic flux density; mixed oxide method; permittivity spectra; remanence; sintering density; Crystal microstructure; ferrites; permeability; permittivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2013847

Filename

4815994