Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Piezoelectric Characteristics of Pb($Mg_{1/3}Nb_{2/3}$)$O_3$+ PZT Ceramics for Substrates of High-Frequency Devices

고주파소자의 기판용 Pb($Mg_{1/3}Nb_{2/3}$)$O_3$+ PZT 세라믹스의 압전특성

  • 이개명 (연세대학교 전기공학과) ;
  • 장낙원 (연세대학교 전기공학과) ;
  • 김준한 (연세대학교 전기공학과) ;
  • 이두희 (연세대학교 전기공학과) ;
  • 박창엽 (연세대학교 전기공학과)
  • Published : 1990.10.01

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Abstract

In this studies, structural, dielectrical piezoelectrical properties and temperature stability of 0.05Pb(Pb($Mg_{1/3}Nb_{2/3}$)$O_3$+ 0.95Pb($Zr_{0.53}Tio_{0.47}$)$O_3$+$\alpha$[wt%] $Cr_2O_3$ piezoelectric ceramics fabricated by the Hot-Press method were investigated. And Poisson ratios of the specimens were measured in order to see that they can be used as the substrates for energy-trapped devices. The specimens of which Poisson ratio was more than 3/1 had the $\alpha$ range 0.3~0.75, and piezoelectric properties were degraded in the range $\alpha$$\geq$0.75, and temperature stability was good in the $\alpha$ range 0.5~0.75. Accordingly, the optimal point of $Cr_2O_3$ additive weight is sure to be in the vicinity of 0.5[wt%].

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