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Improvement in Structural and Magnetic Properties of Electrospun Ni<sub>1-x</sub>Cu<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> Nanofibers
School of Physics and Electronic Science, Guizhou Normal College, Guiyang, China
Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
- 1 School of Physics and Electronic Science, Guizhou Normal College, Guiyang, China
- 2 Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
- 3 Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
- 4 Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, China
Soft Nanoscience Letters·Volume 07 (2017)·Pages 17–26·Published 8 November 2017·DOI10.4236/snl.2017.72002
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Abstract
A series of Ni 1-x Cu x Fe 2 O 4 (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 NiFe 2 O 4 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 Ni 1-x Cu x Fe 2 O 4 . The saturation magnetization ( M s ) decreases linearly with increasing Cu 2+ content, while coercivity ( H c ) has slowly decreased before x ≤ 0.5, and then sharply increased to 723.9 Oe for x = 1.0. The magnetic properties of Ni 1-x Cu x Fe 2 O 4 can be explained in Neel’s model, cation distribution and shape anisotropy.
KeywordsNiCu FerriteElectrospinningMagnetic PropertiesNanostructures
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