Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Adsorbed Oxygen and Electrical Properties of Porous $BaTiO_3$-based Ceramics

다공성 $BaTiO_3$계 세라믹스의 흡착산소와 전기적 성질

  • Kim, Jun-Gyu (Institute of Advanced Materials, Inha University) ;
  • Jo, Won-Seung (School of Materials Science and Engineering, Inha Uniwrsity) ;
  • Yu, Yeon-Cheol (School of Materials Science and Engineering, Inha Uniwrsity) ;
  • Park, Gyeong-Sun (Department of Advanced Materials Engineering, Sejong University)
  • 김준규 (인하대학교 소재연구소) ;
  • 조원승 (인하대학교 재료공학부) ;
  • 유연철 (인하대학교 재료공학부) ;
  • 박경순 (세종대학교 신소재공학과)
  • Published : 2001.10.01
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Abstract

Electrical properties of porous $BaTiO_3-based$ ceramics were investigated from the viewpoint of adsorbed oxygen. Namely, the effects of heat-treatment temperature ($450-600^{\circ}C$) and measuring atmosphere (oxygen and nitrogen) on the PTCR characteristics of the porous $BaTiO_3-based$ ceramics were investigated. It was found that the PTCR characteristics of the porous $BaTiO_3-based$ ceramics was developed at $\geq$55$0^{\circ}C$, and the magnitude of the PTCR characteristics increased with increasing heat-treatment temperature. It was also found that the magnitude of the PTCR characteristics in the porous $BaTiO_3-based$ ceramics increased in oxygen atmosphere, whereas decreased in nitrogen atmosphere during heating and cooling.

Keywords

References

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