J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (4): 333-336.

• Regular Papers • Previous Articles     Next Articles

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

Ji-Hun Yu, Jai-Sung Lee, Yong-Ho Choa, Heinrich Hofmann   

  1. 1) Korea Institute of Materials Science, Changwon, 641-831, Korea
    2) Division of Materials and Chemical Engineering, Hanyang University, Ansan, 426-791, Korea
    3) Swiss Federal Institute of Technology at Lausanne, Lausanne, CH-1015, Switzerland
  • Received:2008-03-27 Revised:2010-04-13 Online:2010-04-30 Published:2010-04-28
  • Supported by:

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

Abstract:

SiO2 coated α-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 α-Fe2O3 nanocomposite powder which means the magnetic heating effect under alternative magnetic field was much higher than the single phase α-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 α-Fe2O3 nanocomposite powder were discussed in terms of microstructural development in this study.

Key words: Hyperthermia, Nano-Bio, Chemical vapor condensation, Silica coated iron oxide nanoparticle, Superparamagnetism