Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Effect of CeO2 on piezoelectric properties of PSN-PZT ceramics for a hypersonic sound speaker application

지향성 스피커용 PSN-PZT 세라믹스의 압전 특성에 미치는 CeO2 첨가 효과

  • Choi, J.B. (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) ;
  • Hwang, S.I. (Department of Materials Science and Engineering, University of Seoul) ;
  • Yoo, K.S. (Department of Materials Science and Engineering, University of Seoul)
  • 최정범 (서울시립대학교 신소재공학과) ;
  • 송건화 (서울시립대학교 신소재공학과) ;
  • 김한지 (서울시립대학교 신소재공학과) ;
  • 황성익 (서울시립대학교 신소재공학과) ;
  • 유광수 (서울시립대학교 신소재공학과)
  • Published : 2008.03.31
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Abstract

The effect of $CeO_2$ as a sintering additive on the microstructure and the piezoelectric property of yPb$(Sb_{0.5}Nb_{0.5})O_3$-(1-y)Pb$(Zr_{0.52}Ti_{0.48})O_3$ ($0{\leq}y{\leq}0.1$, PSN-PZT) for a hypersonic sound speaker (HSS) application was investigated. The samples were sintered at $1250^{\circ}C$ for 2 h. The crystal structure and surface morphology of the samples were examined using XRD and FE-SEM, respectively. Study on the influence of $CeO_2$ additives on the dielectric and piezoelectric properties indicated that the $CeO_2$-added PSN-PZT system had a high piezoelectric properties. The optimized results of ${\varepsilon}_r=1209$, $K_p$=52% $d_{33}$=351(pC/N) and $Q_m$=1230.16 were obtained at 0.4 wt.% $CeO_2$-added PSN-PZT.

Keywords

References

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