Fe fine particles encapsulated by titanium oxides with high magnetization for biomedical application
Journal of Magnetism and Magnetic Materials(2007)
摘要
Iron (Fe) fine particles encapsulated by titanium oxide (TiO2) were synthesized through a solid-phase reaction. The structure of Fe cores and TiO2 shells consisted of α-Fe and rutile TiO2, respectively. The average particle size was 0.8μm, in which a Fe particle with a diameter of ∼750nm was encapsulated by a TiO2 shell with a thickness of ∼100nm. The Fe particles had a high saturation magnetization of 127Am2/kg and low coercivity of 1.6kA/m. They also exhibited excellent corrosion resistance, similar to Fe3O4 in a soaking test.
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关键词
Magnetic fine particles,Solid-phase reaction,Metal Fe,High magnetization,Corrosion resistance
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