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J. Korean Ceram. Soc. > Volume 33(11); 1996 > Article
Journal of the Korean Ceramic Society 1996;33(11): 1195.
졸-겔법을 이용한 $(Pb_{1-x}Sr_x)TiO_3$ 박막의 제조 및 특성에 관한 연구
선계혁, 윤희한, 황규석1, 김병훈
전남대학교 공과대학 무기재료공학과
1전남대학교 공과대학 무기재료공학
Study on the Preparation and Characteristics of $(Pb_{1-x}Sr_x)TiO_3$ Thin Films by the Sol-gel Process
To prepare the dielectric thin films of (Pb1-xSrx)TiO3 (x=0.1, 0.2, 0.3, 0.35, 0.5) by the sol-gel process titanium (IV) isopropoxide (Ti[OCH(CH3)2]4) and Pb Sr, acetate were used therefore the thin films were fabricated by dip-coating method. Stability of the sol decreased with addition of Sr content thin films could be fabricated up to 35mol% Over this range precipitation of sol occured thin films couldn't be obtained. Transmittance of thin films at visible range decreased with the increase of heat-treatment temperature but exhibited transmit-tance above 60% in all case. Moreover transmittance of thin films at visible range slightly increased with of addition of Sr,. When thin film containing 30 mol% srontium was heated at 600℃ the best perovskite phase was obtained. The dielectric constant (ε) was 280 and dielectric loss factor (tan δ) was 0.021 and curie tempera-ture (Tc) decreased with the increase of addition of Sr.
Key words: Dielectric $(Pb_{1-x}Sr_x)TiO_3$, thin film, Acetate, Dip-coating, Perovskite, Transmittance, Dielectric constant
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