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Magnetic and dielectric properties of barium ferrite fibers/poly(vinylidene fluoride) composite films

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Abstract

Barium ferrite fibers/poly(vinylidene fluoride) (BaFe12O19/PVDF) composite films were prepared from poly(vinylidene fluoride) (PVDF) resin with different weight percentages (1, 5, 10, 20, 30 wt%) of M-type barium ferrite fibers using N,N-dimethylformamide as a solvent. The structure and morphology of the BaFe12O19/PVDF composite films were characterized by scanning electron microscopy and X-ray diffraction. These results show that BaFe12O19 fibers with diameters around 1 μm and an aspect ratio (length/diameter) of about 50 are well dispersed in the PVDF resin and the dispersed fibers result in a structural change of the PVDF from α to β phase. Measurements of the magnetization of the composite films by using a vibrating sample magnetometer show that these BaFe12O19/PVDF composite films possess a hard magnetic characteristic. The specific saturation magnetization and dielectric loss increase with BaFe12O19 content, whereas the coercivity and dielectric constant of the composite films are less affected. These BaFe12O19/PVDF composite films can combine magnetic, dielectric, and mechanical properties of the BaFe12O19 and PVDF phases.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant No. 50674048), China Postdoctoral Science Foundation (Grant No. 20090451169), Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103227110006), and the Jiangsu Province's Postgraduate Cultivation and Innovation Project (Grant No.CX10B-257Z).

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Authors and Affiliations

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

    Xiaojing Jing, Xiangqian Shen, Haojie Song & Fuzhan Song

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  1. Xiaojing Jing
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  2. Xiangqian Shen
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  3. Haojie Song
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  4. Fuzhan Song
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Correspondence to Xiangqian Shen.

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Jing, X., Shen, X., Song, H. et al. Magnetic and dielectric properties of barium ferrite fibers/poly(vinylidene fluoride) composite films. J Polym Res 18, 2017–2021 (2011). https://doi.org/10.1007/s10965-011-9610-x

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  • DOI: https://doi.org/10.1007/s10965-011-9610-x

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