Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Effect of MnO2 on piezoelectric properties of PSN-PZT ceramics for piezoelectric actuator applications

압전 액츄에이터용 PSN-PZT 세라믹스의 압전 특성에 미치는 MnO2 첨가 효과

  • Choi, J.W. (Department of Materials Science and Engineering, University of Seoul) ;
  • Song, K.H. (Department of Materials Science and Engineering, University of Seoul) ;
  • Kim, H.J. (Department of Materials Science and Engineering, University of Seoul) ;
  • Yoon, S.J. (Korea Institute of Science and Technology) ;
  • Yoo, K.S. (Department of Materials Science and Engineering, University of Seoul)
  • 최정운 (서울시립대학교 신소재공학과) ;
  • 송건화 (서울시립대학교 신소재공학과) ;
  • 김한지 (서울시립대학교 신소재공학과) ;
  • 윤석진 (한국과학기술연구원 박막재료연구센터) ;
  • 유광수 (서울시립대학교 신소재공학과)
  • Published : 2007.03.31
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Abstract

The effect of $MnO_{2}$ as a sintering additive on the microstructures and the piezoelectric properties, especially mechanical quality factor, of 0.05 Pb$(Sb_{0.5}Nb_{0.5})O_{3}$-0.95 Pb$(Zr_{0.52}Ti_{0.48})O_{3}$ (PSN-PZT) piezoelectric ceramics was investigated. The samples were sintered at $1250^{\circ}C$ for 2 h. The crystal structure and surface morphology of the sample were examined using XRD and FE-SEM, respectively. A study on the influence of $MnO_{2}$ additives on the dielectric and piezoelectric properties showed that the $MnO_{2}$-added PSN-PZT system exhibited a high mechanical quality factor and well-situated piezoelectric properties. The optimized results of $d_{33}$ (319 pC/N), $k_{p}$ (55 %), and $Q_{m}$ (751.24) were obtained at 0.2 wt% $MnO_{2}$ added PSN-PZT piezoelectrics.

Keywords

References

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