Magnetic enhancement of pure gamma Fe2O3 nanochains by chemical vapor deposition

High-yield pure chain-like one-dimensional nanostructures consisting of single-crystal gamma-Fe2O3 nanoparticles have been produced by using a chemical vapor deposition (CVD) approach. The constituents, phase, and magnetic properties of these nanochains have been determined. The synthesized nanochai...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2008-02, Vol.20 (7), p.075217-075217 (4)
Main Authors: Zhou, Shao-Min, Zhang, Xing-Tang, Gong, He-Chun, Zhang, Bin, Wu, Zhi-Shen, Du, Zu-Liang, Wu, Si-Xin
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of nanostructures
Physics
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Summary:High-yield pure chain-like one-dimensional nanostructures consisting of single-crystal gamma-Fe2O3 nanoparticles have been produced by using a chemical vapor deposition (CVD) approach. The constituents, phase, and magnetic properties of these nanochains have been determined. The synthesized nanochains can be reorganized under a weak magnetic field (about 0.4 T). The nanochain growth mechanism is proposed to be driven by magnetostatic interaction. The hysteresis loop was operated to show that the magnetic properties of the nanochains are strongly influenced by the morphology of the crystal. Room temperature magnetic measurements show that the as-fabricated gamma-Fe2O3 nanochains are ferromagnetic with higher saturation magnetization and higher coercivity values than those of the counterpart bulk, which could have potential applications in spin filtering, high-density magnetic recording and nanosensors.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/20/7/075217