Influences of dopants on microstructure and magnetic properties of (Mg0.476Mn0.448Zn0.007)(Fe1.997Ti0.002)O4 ferrites

Hongzhi Lu

doi:10.1007/s11595-011-0288-z

Journal of Wuhan University of Technology Materials Science Edition ›› 2011, Vol. 26 ›› Issue (4) : 668 -670. DOI: 10.1007/s11595-011-0288-z

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Influences of dopants on microstructure and magnetic properties of (Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites

Hongzhi Lu ¹^,^{^a}

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Abstract

Influences of addition of CaO, CoO and V₂O₅ on the microstructure and magnetic properties of (Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites were investigated. The powders of (Mg_0.476Mn_0.448Zn_0.007) (Fe_1.997Ti_0.002)O₄ composition were prepared by using a conventional ceramic powder processing technique. The experimental results showed that the average grain size of the sintered ferrites codoped with 0.03wt% CaO, 0.04wt% CoO and 0.06wt% V₂O₅ was about 15 μm; the saturation magnetization of ferrites was 68.78 emu/g. The addition of V₂O₅ in the ferrites can not only increase value of the saturation magnetization, but also decrease the average grain size of (Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites. Simultaneous incorporation of CoO, CaO and V₂O₅ dopants into (Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites can not only improve the saturation magnetization of the materials, but also inhibit abnormal grain growth.

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(Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites / microstructure / magnetic properties / dopants

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Hongzhi Lu. Influences of dopants on microstructure and magnetic properties of (Mg_0.476Mn_0.448Zn_0.007)(Fe_1.997Ti_0.002)O₄ ferrites. Journal of Wuhan University of Technology Materials Science Edition, 2011, 26(4): 668-670 DOI:10.1007/s11595-011-0288-z

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