Design and Acoustic Properties of Piezoelectric Device with the PMN-PT-PZ System

PMN-PT-PZ계를 이용한 압전소자의 설계 및 음향특성

  • 고영준 (영남대학교 대학원 센서 및 시스템공학과) ;
  • 서희돈 (영남대학교 전기전자공학부) ;
  • 남효덕 (영남대학교 전기전자공학부) ;
  • 장호경 (경산대학교 자연과학부)
  • Published : 2000.05.13

Abstract

In this study, the acoustic transducer of a thin circular disc-type with PZT/Metal was manufactured. The piezoelectric transducer with 200kHz resonance frequency was designed by considering the sharp directivity and the sound pressure. The dielectric and piezoelectric properties of 0.5 weight percent $MnO_2$ and NiO doped $0.1Pb(Mg_{1/3}Nb_{2/3})O_3-0.45PbTiO_3-0.42PbZrO_3$ ceramics were investigated aiming at acoustic transducer applications. Also, the acoustic characteristics of a thin circular disc-type with metal-piezoceramics have been Investigated.

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