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    • Effect of Diamagnetic Substitution on the Structure and Properties of Barium Hexaferrite

    I.A. Solizoda,V.E. Zhivulin,S.A. Gudkova,A.A. Chouprik,S.V. Taskaev,Denis Vinnik

    openalex（2024）

    Cited 0|Views4
    Abstract
    Aluminum substituted BaFe12-xAlxO19, titanium substituted BaFe12-xTixO19, aluminum and titanium substituted BaFe12-x-yAlxTiyO19 (with x = y = 0.0, 0.1, 0.5, 1.0) barium hexaferrites have been synthesized using the solid phase method. The effect of Al+3 or/and Ti4+ substitution on crystal structure and properties of BaFe12-xAlxO19, BaFe12-yTiyO19 and BaFe12-x-yAlxTiyO19 was studied. It was found that the resulting samples consist of plate-like hexagonal particles with sizes in the range of 1-10 μm. The phase purity and the crystal structure of the obtained ferrite solid solutions have been studied by powder X-ray diffraction. The results of investigation the crystal structure confirmed the formation of a hexagonal single phase with space group P63/mmc (194) in the synthesized samples. In all samples smaller ionic radii aluminum decreased cell parameters. On the other hand, aliovalent Ti4+substation due to the possibility of Fe2+ formation led decreased cell parameters. Magnetization for all the samples is saturated at room temperature in fields of ~ 3 T. The magnetization decreases from for all samples. The coactivity decreased for BaFe12-xAlxO19 and decreased for BaFe12-x-yAlxTiyO19 more likely due to changing the crystalline particle sizes. The Curie temperature decreased, which was due to a change in the magnetic structure of the resulting ferrite-based solid solutions.
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    Martensite Transformation
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