Synthesis of Fe$_3$O$_4$ nanoparticles and their magnetic properties

Yan Wei

Synthesis of Fe$_3$O$_4$ nanoparticles and their magnetic properties

Applied Physics 2020-01-22 v1 Materials Science

Authors: Yan Wei

Abstract

Fe $_3$ O $_4$ magnetic nanoparticles (MNPs) were synthesized by a co-precipitation method using sodium citrate and oleic acid as modifiers. Phase composition and microstructure analysis indicate that the sodium citrate and oleic acid have been successfully grafted onto the surface of Fe $_3$ O $_4$ MNPs. The magnetic behaviors reveal that the modification can decrease the saturation magnetization of Fe $_3$ O $_4$ MNPs due to the surface effect. Fe $_3$ O $_4$ MNPs modified by sodiumcitrate and oleic acid show excellent dispersion capability, which should be ascribed to the great reduction of high surface energy and dipolar attraction of the nanoparticles.

Keywords

fe3o4 nanoparticles co-precipitation magnetic properties surface modification saturation magnetization dispersion

Cite

@article{arxiv.2001.06583,
  title  = {Synthesis of Fe$_3$O$_4$ nanoparticles and their magnetic properties},
  author = {Yan Wei},
  journal= {arXiv preprint arXiv:2001.06583},
  year   = {2020}
}

Comments

Original article and its erratum

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