Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Synthesis and Characterization of SiO2/Fe2O3 Nanocomposite Particles for Hyperthermia

온열치료용 SiO2/Fe2O3 나노복합입자의 제조와 특성

  • Yu, Ji-Hun (Department of Materials Technology, Korea Institute of Machinery and Materials) ;
  • Lee, Chang-Woo (Division of Materials and Chemical Engineering, Hanyang University) ;
  • Lee, Jai-Sung (Division of Materials and Chemical Engineering, Hanyang University) ;
  • Choa, Yong-Ho (Department of Advanced Materials Engineering, Hanyang University) ;
  • Hofmann, Heinrich (Swiss Federal Institute of Technology at Lausanne(EPFL))
  • 유지훈 (한국기계연구원 재료기술연구소 나노분말재료그룹) ;
  • 이창우 (한양대학교 재료화학공학부) ;
  • 이재성 (한양대학교 재료화학공학부) ;
  • 좌용호 (한양대학교 신소재공학과) ;
  • Published : 2003.09.01
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Abstract

The magnetic heating effect of $SiO_2$coated $ \Upsilon-Fe_2$$O_3$nanocomposite particle due to magnetic relaxational loss of superparamagnetic regime was investigated by measuring the generated heat from nanocomposite particles in alternative applied magnetic fields. The commercial $ \Upsilon-Fe_2$$O_3$nanoparticles were coated by SiO$_2$in water solution with TEOS and the synthesized nanocomposite powders and its magnetic properties were characterized and compared with the raw$ \Upsilon-Fe_2$$O_3$nanoparticles. The 10∼30 nm sized $ \Upsilon-Fe_2$$O_3$. nanoparticles were coated by 5 nm thickness of amorphous $SiO_2$film. The nanocomposite particle has very low Mr and Hc value showing superparamagnetic behavior The magnetic heating effect of nanocomposite particle on surface coating phase of $SiO_2$was discussed in terms of superparamagnetic behaviors of each particles, and their potential for hyperthermia application was evaluated.

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References

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