Hydrothermal synthesis, magnetic and electromagnetic properties of hexagonal Fe3O4 microplates

Fei Xiang Ma, Xue Yin Sun, Kai He, Jian Tang Jiang, Liang Zhen, Cheng Yan Xu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Magnetite (Fe3O4), with an inverse spinel structure, grows naturally in octahedral shape with eight equivalent {111} crystallographic planes. Here we demonstrated the successful morphology tuning of Fe 3O4 microcrystal from the dominant octahedral shape to planar microplate shape by a facile hydrothermal method. The top and bottom surfaces of Fe3O4 microplates obtained under strongly alkaline and reductive conditions were bounded by {111} facets, and the formation of {111} twin planes was thought to be accountable for the anisotropic morphologies. The obtained Fe3O4 microplates delivered saturation magnetization (Ms) of 96.6 emu/g and coercivity (H c) of 50 Oe. We also measured the electromagnetic properties of Fe3O4 microplates for possible applications as filler for electromagnetic wave absorption coatings.

Original languageEnglish (US)
Pages (from-to)161-165
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
StatePublished - Jun 2014


  • 2D material
  • Electromagnetic property
  • Hydrothermal synthesis
  • Magnetite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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