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http://dx.doi.org/10.4283/JKMS.2003.13.6.246

Magnetic Properties of Magnetic Core Materials for PLC as a Funtion to Additives  

An, Yong-Woon (경남대학교 재료공학과)
Kim, Jong-Ryung (경남대학교 재료공학과)
Oh, Young-Woo (경남대학교 재료공학과)
Abstract
The electromagnetic properties of Ni$\_$0.8/Zn$\_$0.2/Fe$_2$O$_4$ having stable characteristics in high frequency range were investigated as functions of Bi$_2$O$_3$, CaO contents. Power loss increased in proportion to the amount of Bi$_2$O$_3$ up to 0.3 wt% and decreased over 0.3 wt%. Also, permeability increased with Bi$_2$O$_3$ contents. The lowest power loss and highest resonance frequency were obtained to the specimens added Bi$_2$O$_3$ of 0.7wt% and CaO of 0.3 wt% due to creation of resistivity layers in the grain boundaries originated by the solid solution of Bi$_2$O$_3$ and CaO.
Keywords
Ni-Zn ferrite; Power Line Communication; Power loss; additives;
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