Title :
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
fDate :
5/1/2009 12:00:00 AM
Abstract :
Low-temperature-fired (Ni0.4-xMgxCu0.2Zn0.4)Fe1.96O4 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; (Ni0.4-xMgxCu0.2Zn0.4)Fe1.96O4; 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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2013847
