한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

MnO$_2$가 첨가된 PMW-PNN-PT-PZ계 세라믹스의 유전 및 압전 특성

Dielectric and Piezoelectric Characteristics of PMW-PNN-PT-PZ Ceramics with addiction of MnO$_2$

  • 박석환 (연세대학교 전기공학과) ;
  • 윤광희 (연세대학교 전기공학과) ;
  • 박정흠 (연세대학교 전기공학과) ;
  • 김현재 (한국과학기술연구원) ;
  • 박창엽 (연세대학교 전기공학과)
  • 발행 : 1996.05.01
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초록

In this paper, effect of MnO$_2$ addition(0, 0.1, 0.2, 0.3, 0.5wt%) on the microstructure, dielectric and piezoelectric properties of [xPMW - (0.15-x) PNN] - [yPT-(0.85-y)PZ] (x=0, 0.01, 0.02, 0.03, 0.05, y = 0.35, 0.40, ().425, 0.45, 0.5) were investigated. When Ti/Zr ratio was 1.0, dielectric and piezoelectric properties were highest value. With PMW 2mol%, dielectric constant, dielectric constant (d$\_$33/, d$\_$31/) and electromechanical coupling factor (kp, k$\_$31/) were highest values of 1995, 479, 186(x10$\^$-12/C/N), 0.61, 0.36, respectively. With the addition of MnO$_2$, dielectric constant, electromechanical coupling factor (kp, k$\_$31/) were decreased, but with 0.3wt% MnO$_2$, eletromechanical coupling factor was highest value of 0.63. With the addition of MnO$_2$, mechanical quality(Q$\_$m/ was increased.

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