Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Characteristics of perovskite-structure Sr(Ti1-xFex)O3 thick film gas sensors

페롭스카이트 구조 Sr(Ti1-xFex)O3 후막 가스센서의 특성

  • Jin, Guang-Hu (Department of Advanced Materials Engineering, Chosun University) ;
  • Lee, Woon-Young (Education Center of Mold Technology for Advanced Materials & Parts all Rights Reserved, Chosun University) ;
  • Lee, Hyun-Gyu (Department of Advanced Materials Engineering, Chosun University) ;
  • Park, Jin-Seong (Department of Advanced Materials Engineering, Chosun University)
  • 김광호 (조선대학교 신소재공학과) ;
  • 이운영 (첨단부품소재 금형기술 인력양성사업단) ;
  • 이현규 (조선대학교 재료공학과) ;
  • 박진성 (조선대학교 신소재공학과)
  • Published : 2009.11.30
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Abstract

Perovskite-structure $Sr(Ti_{1-x}Fe_x)O_3$ thick films, in which x is 0.4 or 0.6, were prepared by normal ceramic process on alumina substrate. Electrical resistance was measured as a function of thermal treatment condition including atmosphere, time, and temperature. The resistance of $Sr(Ti_{1-x}Fe_x)O_3$ films is lower than those of $SrTiO_3$ or $SrFeO_3$ films. The temperature coefficient of resistance over $550^{\circ}C$ was measured to be 0 for the $Sr(Ti_{1-x}Fe_x)O_3$ films after thermal treatment at $1100^{\circ}C$ in air. The sensing property of the films was also measured as a function of temperature and gas such as $O_2$, CO, $CO_2$, NO and $NO_2$. $Sr(Ti_{1-x}Fe_x)O_3$ films showed a good sensing property for $O_2$, but no sensing signal for CO, $CO_2$, NO and $NO_2$.

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References

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