한국재료학회지 (Korean Journal of Materials Research)

  • 제18권6호
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  • Pages.313-317
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  • 2008
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지
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용액연소법으로 제조한 LaFeO3의 XPS 특성

X-ray Photoelectron Spectroscopy Study of LaFeO3 Powders Synthesized by Solution Combustion

  • 황연 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 강대식 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 박미혜 (서울산업대학교 신소재공학과, 친환경소재제품인력양성센터) ;
  • 조성백 (한국지질자원연구원, 자원활용소재연구부)
  • Hwang, Yeon (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Kang, Dae-Sik (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Park, Mi-Hye (Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology) ;
  • Cho, Sung-Baek (Korea Institute of Geoscience & Mineral Resources, Minerals & Materials Processing Division)
  • 발행 : 2008.06.30
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초록

[ $LaFeO_3$ ] powders were synthesized using a method involving solution combustion, and the surface properties of these powders were examined by x-ray photoelectron spectroscopy. As the amount of fuel increased during the synthesis, the $LaFeO_3$ powders became amorphous with a large plate-like shape. It was found that the O 1s spectra were composed of two types of photoelectrons by deconvolutioning the spectra. Photoelectrons with higher binding energy come from adsorbed oxygen ($O^-$) whereas those with lower energy come from lattice oxygen ($O^{2-}$). The ratio of adsorbed and lattice oxygen increased as the ratio of the fuel and nitrate (${\Phi}$) increased. The binding energy of both types of oxygen increased as ${\Phi}$ increased due to the formation of carbonates.

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