Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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A Study on the Optical Properties of γ-Fe2O3 Nano Particles

γ-Fe2O3 nano 입자의 광학적 특성에 관한 연구

  • Lee, Kwon-Jai (Department of Physics, Soongsil University) ;
  • An, Jeung-Hee (Brain Disease Research Center, Ajou University School of Medicine) ;
  • Shin, Jae-Soo (Department of Advanced Materials Engineering, Daejeon University) ;
  • Kim, Chang-Man (Department of Electrical Engineering and Bioscience, Waseda University) ;
  • Ozaki, Hajime (Department of Electrical Engineering and Bioscience, Waseda University) ;
  • Koh, Jae-Gui (Department of Physics, Soongsil University)
  • 이권재 (숭실대학교 물리학과) ;
  • 안정희 (아주대학교 의과대학 뇌질환 연구센터) ;
  • 신재수 (대전대학교 신소재공학과) ;
  • 김창만 (일본 와세다대학 전기.정보생명공학과) ;
  • 오자끼 하지메 (일본 와세다대학 전기.정보생명공학과) ;
  • 고재귀 (숭실대학교 물리학과)
  • Published : 2006.12.27
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Abstract

The ${\gamma}-Fe_2O_3$ nano particles in the size range of $5{\sim}30$ nm were prepared by a chemical coprecipitation method. The nano particles were coated with 2nd surfactants for obtaining the water-based. The size effect of ${\gamma}-Fe_2O_3$ nano particles for the ultraviolet protection was investigated. The variation of the UV-Vis transmittance spectra as a function of wavelength for a ${\gamma}-Fe_2O_3$ nano particles were showed red-shifted increase with the particle size. The protective effects of UVA onset at near 469, 494, 591 nm for a particle size of 8.7, 9.1 and 12 nm. It is shown that the ${\gamma}-Fe_2O_3$ nano particles was good materials for protect of UV.

Keywords

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