Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Microwave Dielectric Properties of $MnO_2$ Added $(Pb_{0.45}Ca_{0.55})(Fe_{0.5}Nb_{0.5})O_3$ Ceramics

$MnO_2$가 첨가된 $(Pb_{0.45}Ca_{0.55})(Fe_{0.5}Nb_{0.5})O_3$ 세라믹스의 마이크로파 유전특성

  • 이상민 (연세대학교 전기공학과) ;
  • 이두희 (연세대학교 전기공학과) ;
  • 윤현상 (연세대학교 전기공학과) ;
  • 박창엽 (연세대학교 전기공학과)
  • Published : 1993.11.26
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Abstract

$MnO_2$ added $(Pb_{0.45}Ca_{0.55})(Fe_{0.5}Nb_{0.5})O_3$ was calcined at $850^{\circ}C$ for two hours and sintered at $1100^{\circ}C$ for two hours. The microstructure was examined using XRD and SEM. The dielectric constant, the quality factor, and the temperature stability was measured using Hakki and Coleman method. Dielectric constant was improved to 94 from 0.5wt% $MnO_2$ added sample with $Q{\cdot}f=4260GHz$ and acceptable ${\tau}_f$ (< $20ppm/^{\circ}C$).

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