• Title/Summary/Keyword: Epitaxial $Bi_4T_3O_{12}$ film

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Epitaxial Growth of Pulsed-Laser Deposited Bi4Ti3O12/LaAlO3 Thin Films and Bi4Ti3O12/YBa2Cu3O7-x/LaAlO3 Heterostructure (펄스레이저 증착법으로 제작된 $Bi_4Ti_3O_{12}/LaAlO_3$ 박막과 $Bi_4Ti_3O_{12}/YBa_2Cu_3O_{7-x}/LaAlO_3$ 복합구조의 에피 성장)

  • Jo, Wol-Ryeom;Jo, Hak-Ju;No, Tae-Won
    • Korean Journal of Crystallography
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    • v.5 no.2
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    • pp.85-92
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    • 1994
  • Ferroelectric Bi4Ti3012 thin films have been grown on LaAlO(001) by Pulsed-laser deposition. Phase formation and structural films prepared of the films prepared at varigus deposition temperatures are investigated using x-ray diffraction The film grown at 740℃ shows epitaxial growth behavior with c-akis normal to the substrate. N2tBmstiucCures of Bi4Ti3012/YBa2Cu307-x/LaAIO3(001) have been in-situ grown. Even though the a-and b-axes of the Yba2Cu307-x layer show epitaxial growth behavior.

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Preparation of epitaxial bismuth titanate thin films by the sol-gel process (졸-겔법을 이용한 Epitaxial Bismuth Titanate 박막의 제조)

  • 김상복;이영환;윤연흠;황규석;오정선;김병훈
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.13 no.2
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    • pp.56-62
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    • 2003
  • Epitaxial $Bi_4Ti_3O_{12}$ films on $SrTiO_3$(100), L$aA1O_3$(100) and MgO(100) were prepared by sol-gel process using metal naphthenate as a starting material. As-deposited films were pyrolyzed at $500^{\circ}C$ for 10 min In air and annealed at $750^{\circ}C$ for 30 min in air. Crystallinity and in-plane alignment of the film were investigated by X-ray diffraction $\theta$-2$\theta$ scan and P scanning. A field emission-scanning electron microscope and an atomic force microscope were used for characterizing the surface morphology and the surface roughness of the film. The film prepared on MgO(100) showed the most poor crystallinity and in-plane alignment, compared to those on the other substrates. While the films on $LaA1O_3$(100) and $SrTiO_3$(100) having high crystallinity and in-plane alignment showed the form of columnar grain growth, the film on MgO(100) which had poor crystallinity showed the form of acicula grain growth.