Magnetic properties improvement in Fe3O4 nanoparticles grown under magnetic fields

Magnetite nanoparticles have been synthesized under magnetic fields by the method of co-precipitation. The as-prepared samples were characterized by X-ray diffraction and transmission electron microscopy, and their magnetic properties were evaluated on a vibrating sample magnetometer. It is shown th...

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Veröffentlicht in:Journal of crystal growth 2004-06, Vol.266 (4), p.500-504
Hauptverfasser: Wang, Jun, Zhang, Kai, Peng, Zhenmeng, Chen, Qianwang
Format: Artikel
Sprache:eng
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Zusammenfassung:Magnetite nanoparticles have been synthesized under magnetic fields by the method of co-precipitation. The as-prepared samples were characterized by X-ray diffraction and transmission electron microscopy, and their magnetic properties were evaluated on a vibrating sample magnetometer. It is shown that the Fe3O4 samples produced by co-precipitation method under a magnetic field of 1 T have much higher saturation magnetization (15.3 emu/g) than that without magnetic field (6.59 emu/g). It is suggested that the well-crystallized Fe3O4 grains formed under magnetic fields should be responsible for the improved magnetic properties of nanosized Fe3O4 powders.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2004.03.034