Electrical Properties of 50% Pb-excess PZT Thin Films Deposited on the Glass Substrates

유리기판위에 증착한 50% Pb-excess PZT박막의 전기적특성

  • 정규원 (성균관대학교 전기전자 및 컴퓨터공학부) ;
  • 박영 (성균관대학교 전기전자 및 컴퓨터공학부) ;
  • 주필연 (성균관대학교 전기전자 및 컴퓨터공학부) ;
  • 박기엽 (부산정보대학 전기전자 계열) ;
  • 송준태 (성균관대학교 전기전자 및 컴퓨터공학부)
  • Published : 2001.05.01

Abstract

PZT thin films (3500${\AA}$) ahve been prepared onto Pt/Ti/corning glass (1737) substrates with a RF magnetron sputtering system using Pb$\sub$1.50/(Zr$\sub$0.52/,Ti$\sub$0.48)O$_3$ ceramic target. We used two-step annealing techniques, PZT thin films were grown at a 300$^{\circ}C$ substrate temperature and then subjected to an RTA treatment. In case of 500$^{\circ}C$ RTA temperature show pyrochlore phase. The formation of Perovskite phase started above 600$^{\circ}C$ and PZT thin films generated (101) preferred orientation. As the RTA time and temperature increased, crystallization of PZT films were enhanced. The PZT capacitors fabricated at 650$^{\circ}C$ for 10 minutes RTA treatment showed remanent polarization 30 ${\mu}$C/$\textrm{cm}^2$, saturation polarization 42${\mu}$C/$\textrm{cm}^2$, coercive field 110kV/cm, leakage current density 2.83x10$\^$-7/A/$\textrm{cm}^2$, remanent polarization were decreased by 30% after 10$\^$9/ cycles.

Keywords

References

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