Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801207 | Journal of Magnetism and Magnetic Materials | 2010 | 5 Pages |
Abstract
Magnetite nanoparticles are found to assemble into randomly dispersed loose nanoscale spheres with diameters ∼300 nm in ethylene glycol in the presence of polyethylene and a small quantity of polyethyleneimine. Modern analysis methods are employed to provide structure information of the magnetic loose spheres. The ferromagnetic saturation magnetization is ∼80.0 emu g−1, and the coercive force is 209 Oe. The microwave electromagnetic parameters are measured by a vector network analyzer. The synthesized loose spheres exhibit novel microwave properties compared with the conventional Fe3O4 nanoparticles. An additional microwave loss peak appears in the Ku band, which is attributed to the loose structure.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Kun Jia, Rui Zhao, Jiachun Zhong, Xiaobo Liu,