대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

$Nb_2O_5$를 첨가한 압전 세라믹 PZT의 전기적 특성

Electrical Properties of Piezoceramic PZT with $Nb_2O_5$ Dopant

  • 박정학 (동아대학교 전기공학과) ;
  • 최헌일 (동아대학교 전기공학과) ;
  • 사공건 (동아대학교 전기공학과)
  • Park, J.H. (Dept. of Electrical Engr., Dong-A univ.) ;
  • Choi, H.I. (Dept. of Electrical Engr., Dong-A univ.) ;
  • SaGong, G. (Dept. of Electrical Engr., Dong-A univ.)
  • 발행 : 1991.11.22
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초록

Effects of $Nb_2O_5$ addition ranged from 0.0 to 0.75(wt%) on the microstructure and electrical porperties of PZT ceramics have been investigated. The Pb vacancy concentration increases with increasing NbO content. However, the experimental results show the resistivity increases with increasing $Nb^{5+}$ content. This behavior can be explained as a compensation effect and $Nb^{5+}$ can serve as a donar and contribute electrons to the conduction process. According to the law of mass action, this result may reduce the total charge carrier:thus the resistivity increase with NbO content in PZT.

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