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Piezoelectric Properties of Y-Substituted Pb(Ni1/3Nb2/3)-PbZrO3-PbTiO3 Ceramics and Their Application to Multilayer Piezoelectric Actuators

Y 치환에 따른 Pb(Ni1/3Nb2/3)-PbZrO3-PbTiO3 세라믹의 압전특성 및 적층형 압전 액츄에이터 응용

  • 권정호 (울산대학교 첨단소재공학부) ;
  • 최문석 (울산대학교 첨단소재공학부) ;
  • 이대수 (울산대학교 물리학과) ;
  • 정연학 (울산대학교 첨단소재공학부) ;
  • 김일원 (울산대학교 물리학과) ;
  • 송재성 (한국전기연구원 전자기소자연구그룹) ;
  • 정순종 (한국전기연구원 전자기소자연구그룹) ;
  • 이재신 (울산대학교 첨단소재공학부)
  • Published : 2004.02.01

Abstract

The effects of $Y_2$ $O_3$-substitution on the piezoelectric properties of Pb[(N $i_{1}$3/N $b_{2}$3/)$_{0.15}$(Z $r_{1}$2/ $Ti_{1}$2/)$_{0.85}$] $O_3$ceramics were investigated. It was found that $Y^{3+}$ ions incorporate into Pb-sites of the ceramics, resulting in a increased lattice anisotropy and formation of Pb-vacancies. As a result, an orthorhombic-tetragonal phase transition was induced when $\chi$>0.005. At the morphotropic phase boundary of x=0.005, piezoelectric constants( $k_{p}$, $k_{33}$, and $d_{33}$) showed maximum values of 0.53, 0.58, and 350pC/N, respectively. A 30-layer actuator fabricated with the above material showed a maximum strain of 0.12% under 100V DC bias.

Keywords

References

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