Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Crystallization of Amorphours $PbTiO_3$ Thin Film

비정질 $PbTiO_3$ 박막의 결정화에 관한 연구

  • 강영민 (포항공과대학 재료·금속공학과) ;
  • 김상섭 (포항공과대학 재료·금속공학과) ;
  • 백성기 (포항공과대학 재료·금속공학과)
  • Published : 1993.05.01
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Abstract

We studied the crystallization behavior of amorphous PbTiO3 thin film grown at 30$0^{\circ}C$ by RF magnetron sputtering on Pt substrate. Crystallization to full perovskite phase was observed after annealing at 475$^{\circ}C$, for 9min, without PbO volatilization. The higher the annealing temperature, the shorter the time required for crystallization. The isothermal kinetic study at 475$^{\circ}C$ showed that the Avrami constant was approximately 4, which implies that the crystallization can be characterized by isotropic 3-dimensional growth with a constant nucleation rate. The TEM study revealed that the crystallized thin film was composed of very fine (20~100nm) grains oriented randomly without any evidence of 90$^{\circ}$domain boundaries.

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References

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