Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Electromechanical Properties of PMN-PT-PZ Composition for High Power Device

고출력 압전소자를 위한 압전 세라믹(PMN-PT-PZ)조성의 전기기계적 특성

  • Lee, K.W. (Dept. of Electrical Eng., Chungbuk Nat'l Univ.) ;
  • Hong, J.K. (Dept. of Electrical Eng., Chungbuk Nat'l Univ.) ;
  • Jeong, S.H. (Daewon Tech. College) ;
  • Lee, J.S. (Dept. of Electrical Eng., Chungbuk Nat'l Univ.) ;
  • Park, C.H. (Dept. of Electrical Eng., Chungbuk Nat'l Univ.) ;
  • Lim, K.J. (Dept. of Electrical Eng., Chungbuk Nat'l Univ.)
  • Published : 1999.07.19
Download PDF
⟨ Previous Next ⟩

Abstract

This paper is the study for piezoelectric properties of PMN-PT-PZ composition for high power piezoelectric device. It needs the properties such as high mechanical quality factor(Qm), high electromechanical coupling coefficient(kp) and high dielectric strain constant$(d_31)$, and the stable electromechanical properties under high vibration level. For acquiring this results, the value of x is changed in 0.1Pb$(Mn_{1/3}Nb_{2/3})O_3$+(0.9-x)$PbZrO_3+xPbTiO_3$ composition to find MPB(morphotropic phase boundary), and the piezoelectric constants is measured by resonance-antiresonance frequency method, based on IRE Standard. Also, it is measured as a function of the amount of additive, $Nb_2O_5$. When the composition is applied to high power device, the electromechanical properties is measured by laser vibrometer to confirm the reliablity under high vibration level. From these results, PMN-PT-PZ composition is shown excellent properties and capacity of application to high power device.

Keywords