Special Issue Ceramics Integration. Liquid-Phase Epitaxial Growth of BaTiO3 Doped(Na0.5Bi0.5)TiO3 Single Crystals on a SrTiO3 Single Crystal Substrate.

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  • OHASHI Naoki
    Department of Materials Science and Technology, Massachusetts Institute of Technology Advanced Materials Laboratory, National Institute for Materials Science
  • SHEETS Sossity
    Department of Materials Science and Technology, Massachusetts Institute of Technology
  • FARREY Gregory
    Department of Materials Science and Technology, Massachusetts Institute of Technology
  • SOUKHOJAK Andrey
    Department of Materials Science and Technology, Massachusetts Institute of Technology
  • CHIANG Yet-Ming
    Department of Materials Science and Technology, Massachusetts Institute of Technology

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Other Title
  • チタン酸バリウム添加チタン酸ビスマスナトリウムのチタン酸ストロンチウム基板上への液相エピタキシ成長
  • Liquid-Phase Epitaxial Growth of BaTiO3 Doped (Na0.5Bi0.5)TiO3 Single Crystals on a SrTiO3 Single Crystal Substrate

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Abstract

Single crystals of sodium bismuth titanate, (Na, Bi)TiO3 (NBT), and its solid solutions were grown by a liquid phase epitaxy (LPE) using strontium titanate, SrTiO3 (ST), single crystals as substrates. X-ray diffraction measurements and polarized optical images revealed that the crystals could be epitaxially grown on both the (001) face and the (111) face of the ST substrate. However, due to lattice mismatch, the grown crystals had a multi-domain structure with domain boundaries at both 90 and 180°. The NBT crystals grown by using unsealed platinum pan had an inhomogeneous chemical composition, while homogeneous crystals were grown by using sealed platinum capsules for the growth cell. It is concluded from the results of several experiments on inter-diffusion between the substrate and the grown crystal that liquid phase epitaxy is appropriate for the growth of NBT.

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