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http://dx.doi.org/10.4283/JKMS.2007.17.6.232

The Study of Magnetic Properties of Ni-Zn-Cu Ferrite by variation of Low Temperature Sintered  

Koh, Jae-Gui (Department of Physics, Soongsil University)
Publication Information
Journal of the Korean Magnetics Society / v.17, no.6, 2007 , pp. 232-237 More about this Journal
Abstract
We have synthesized the low temperature sintered of Ni-Zn-Cu ferrite with nonstoichiometric composition a little deficient in $Fe_2O_3$ from $(Ni_{0.2}Cu_{0.2}Zn_{0.6})_{1+x}(Fe_2O_3)_{1-x}$. For low loss and acceleration of grain growth $TiO_2$ and $Li_2CO_3$ was added from 0.25 mol% to 1.0 mol%. The mixture of the law materials was calcinated and milled. The compacts of toroidal type were sintered at different temperature $(875^{\circ}C,\;900^{\circ}C,\;925^{\circ}C\;950^{\circ}C)$ for 2 hours in air followed by an air cooling. Then, effects of composition and sintering temperatures on the physical properties such as density, resistivity, magnetic induction, coercive force, initial permeability, and quality factor of the Ni-Zn-Cu ferrite were investigated. The density of the Ni-Zn-Cu ferrite was $4.85\sim5.32g/cm^3$, resistivity revealed $10^8\sim10^{12}\Omega-cm$. The magnetic properties obtained from the aforementioned Ni-Zn-Cu ferrite specimens were 1,300 gauss for the maximum induction, 4.5 oersted for the coercive force, 275 for the initial permeability, and 83 for the quality factor. The physical properties indicated that the specimens could be utilized as the core of high frequency range (involved microwave range) communication and deflection yoke of T.V.
Keywords
magnetic induction; coercive force; initial permeability; quality factor; Ni-Cu-Zn ferrite;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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