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Preparation and magnetic properties of SrFe12-xRexO19
(Re=Sm,Dy,Er)ferrite fiber |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract The spinel SrFe12-xRexO19(Re=Sm,Dy,Er)ferrite fibers were successfully prepared by electrospinning from raw materials of PVP, metal salts and rare earth. The samples were investigated by TG-DSC, XRD, SEM, TEM and VSM. The results show that the solubility is limited in the lattice structure of SrFe12O19 due to the growth inhibition of ferrite crystalline by rare earth ions. The ferrite fibers consisting of hexagonal platelike grain with size of 60 nm are obtained by optimized thermal treatment process. The Ms is decreased with the increasing of rare earth ion radius and doping amount, while Hc is increased. The lattice structure and magnetocrystalline anisotropy of SrFe12O19 ferrite can be changed by rare earth ion substitution.
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