Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8157329 | Journal of Magnetism and Magnetic Materials | 2014 | 5 Pages |
Abstract
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 Fe3O4 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 96.6Â emu/g and coercivity (Hc) of 50Â Oe. We also measured the electromagnetic properties of Fe3O4 microplates for possible applications as filler for electromagnetic wave absorption coatings.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Fei-Xiang Ma, Xue-Yin Sun, Kai He, Jian-Tang Jiang, Liang Zhen, Cheng-Yan Xu,