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Nanocrystalline SrCexFe12−xO19 (x = 0.00, 0.02, 0.04, 0.06, 0.08) microfibers by sol–gel method

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Abstract

The SrCexFe12−xO19 (x ≤ 0.08) ferrite microfibers were prepared via sol–gel method from starting reagents of metal nitrate salts and citric acid. The obtained microfibers were characterized by TG-DSC, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The XRD patterns show that the main phase is M-type strontium hexaferrite without other impurity phases when calcined at 750 °C for 1 h, and the Ce3+ ions doping has not resulted in crystal structural changes of the Sr ferrite magnetoplumbite type structure. The SEM and TEM images indicate that samples with different calcination temperature and various values of x possess the diameters of below 10 μm and homogeneous hexagonal plate-like morphology. The VSM results show that saturation magnetization (Ms) gradually increases with increase of calcination temperature while decreases with increase of addition of Ce3+ ions, and coercive force (Hc) reveals an increase at first and then decreases with increase of calcination temperature and Ce3+ ions content.

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Acknowledgments

This work was financially supported China Postdoctoral Science Foundation (Grant No. 20080431069).

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  1. School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China

    Xianfeng Meng, Jun Gao & Ye Lu

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  1. Xianfeng Meng
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  2. Jun Gao
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  3. Ye Lu
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Correspondence to Xianfeng Meng.

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Meng, X., Gao, J. & Lu, Y. Nanocrystalline SrCexFe12−xO19 (x = 0.00, 0.02, 0.04, 0.06, 0.08) microfibers by sol–gel method. J Sol-Gel Sci Technol 64, 86–92 (2012). https://doi.org/10.1007/s10971-012-2830-7

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  • DOI: https://doi.org/10.1007/s10971-012-2830-7

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