Synthesis and Characterization of SiO2 Coated γ-Fe2O3 Nanocomposite Powder for Hyperthermic Application

材料科学技术（英文）, 2010, 26(4): 333-336.

^1, , ^2, , ^3, , ^4,

1.Korea Institute of Materials Science, Changwon, 641-831, Korea

2.Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea

3.Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea

4.Swiss Federal Institute of Technology at Lausanne, Lausanne, CH-1015, Switzerland

基金项目: the National Core Research Center Program from the Ministry of Science & Technology and the Korea Science & Engineering Foundation(R15-2006-022-03001-0)

Synthesis and Characterization of SiO2 Coated γ-Fe2O3 Nanocomposite Powder for Hyperthermic Application

Ji-Hun Yu ^1, , Jai-Sung Lee ^2, , Yong-Ho Choa ^3, , Heinrich Hofmann ^4,

1.Korea Institute of Materials Science, Changwon, 641-831, Korea

2.Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea

3.Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea

4.Swiss Federal Institute of Technology at Lausanne, Lausanne, CH-1015, Switzerland

Keywords： Hyperthermia

SiO2 coated γ-Fe2O3 nanocomposite powder has been successfully synthesized by chemical vapor condensation process and its feasibility on hyperthermic application was investigated in this study. The power loss of SiO2 coated γ-Fe2O3 nanocomposite powder which means the magnetic heating effect under alternative magnetic field was much higher than the single phase γ-Fe2O3 nano powder due to the very fine size under 20 nm and well dispersion in biologically compatible SiO2 matrix. The superparamagnetism and hyperthermic property of SiO2 coated γ-Fe2O3 nanocomposite powder were discussed in terms of microstructural development in this study.

参考文献

[1]	R. Hergt;W. Andra;C. G. d'Ambly;Ingrid Hilger;Werner A. Kaiser;Uwe Richter;Hans-Georg Schmidt .Physical limits of hyperthermia using magnetite fine particles[J].IEEE Transactions on Magnetics,1998(5 Pt.2):3745-3754.
[2]	D.W. Lee;J.H. Yu;T.S. Jang .Nanocrystalline iron particles synthesized by chemical vapor[J].Materials Letters,2005(17):2124-2127.

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