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Characterization and magnetic properties of electrospun Co1−x Zn x Fe2O4 nanofibers

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Abstract

By the electrospinning and calcination techniques, we have prepared uniform nanofibers of Co1−x Zn x Fe2O4 (0.0≤x≤0.5) ferrites with diameters of 110–130 nm. The Co1−x Zn x Fe2O4 nanofibers are single-phase spinels and the lattice constant with Zn content deviates from the Vegard’s law for these Co1−x Zn x Fe2O4 nanofibers. The Co1−x Zn x Fe2O4 nanocrystal grains by which are built nanofibers increase with calcination temperature. Variations of coercivity and saturation magnetization with calcination temperature can be explained in terms of the grain-size (D) effect. The coercivity (H c) of Co0.5Zn0.5Fe2O4 nanofibers varies as D 0.65 and basically follows the predicted D 2/3 dependence based on the random anisotropy model in a D range below the single-domain size around 40 nm. The saturation magnetization of Co1−x Zn x Fe2O4 nanofibers initially increases with increasing Zn content, reaches a maximum value at x=0.3 and then decreases with further increase of Zn content, while the coercivity exhibits a continuous reduction with the increase of Zn content.

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Authors and Affiliations

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

    X. Q. Shen, J. Xiang, F. Z. Song & M. Q. Liu

  2. School of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang, 212003, China

    J. Xiang

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  1. X. Q. Shen
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  2. J. Xiang
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  3. F. Z. Song
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  4. M. Q. Liu
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Correspondence to X. Q. Shen.

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Shen, X.Q., Xiang, J., Song, F.Z. et al. Characterization and magnetic properties of electrospun Co1−x Zn x Fe2O4 nanofibers. Appl. Phys. A 99, 189–195 (2010). https://doi.org/10.1007/s00339-009-5494-6

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  • DOI: https://doi.org/10.1007/s00339-009-5494-6

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