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Improvement in Structural and Magnetic Properties of Electrospun Ni1-xCuxFe2O4 Nanofibers

Weiwei Pan, Xinlei Zhang, Qin-Fang Liu, Jianbo Wang
Soft Nanoscience Letters , Volume 7, pp 17-26; doi:10.4236/snl.2017.72002

Abstract: A series of Ni1-xCuxFe2O4 (0.0 ≤ x ≤ 1.0) nanofibers have been synthesized employing electrospinning method at 650°C. The effect of Cu substitution on structural, morphology and magnetic properties of NiFe2O4 nanofibers is reported. The XRD analysis showed the formation of single-phase cubic spinel Ni-Cu ferrite and an increasing behavior of lattice constant. The surface morphology is characterized by SEM, it is investigated that nanofibers have uniform and continuous morphology. The VSM results showed Cu substitution played an important role in magnetic properties of Ni1-xCuxFe2O4. The saturation magnetization (Ms) decreases linearly with increasing Cu2+ content, while coercivity (Hc) has slowly decreased before x ≤ 0.5, and then sharply increased to 723.9 Oe for x = 1.0. The magnetic properties of Ni1-xCuxFe2O4 can be explained in Neel’s model, cation distribution and shape anisotropy.
Keywords: Behavior / morphology / magnetic properties / nanofibers / structural / Ni1 xCuxFe2O4

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