Initial growth stages of epitaxial BaTiO3 films on vicinal SrTiO3:Nb (001) substrates

A. Visinoiu; M. Alexe; H. N. Lee; D. N. Zakharov; A. Pignolet; D. Hesse; U. Gösele

Initial growth stages of epitaxial BaTiO₃ films on vicinal SrTiO₃:Nb (001) substrates

A. Visinoiu, M. Alexe, H. N. Lee, D. N. Zakharov, A. Pignolet, D. Hesse, U. Gösele

Research output: Contribution to journal › Article › peer-review

Abstract

The growth mechanism of epitaxial BaTiO₃ films on vicinal Nb-doped SrTiO₃ (SrTiO₃:Nb) (001) substrate surfaces was studied in terms of surface morphology, crystalline orientation, microstructure, and film/substrate interface. Well-oriented BaTiO₃ thin films were grown on SrTiO₃ substrates with well-defined terraces by pulsed laser deposition. The regularly terraced TiO₂-terminated surfaces of vicinal SrTiO₃:Nb (001) substrates were prepared by a definite chemical and thermal treatment. Under our conditions, BaTiO₃ seems to grow with a layer-then-island (Stranski-Krastanov) growth mechanism. In order to investigate the orientation and crystallinity of the BaTiO₃ films, x-ray diffraction and high-resolution transmission electron microscopy were performed. Ferroelectricity of the BaTiO₃ films was proved by electrical measurements performed on Pt/BaTiO₃/SrTiO₃:Nb heterostructures.

Original language	English
Pages (from-to)	285-290
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	688
State	Published - 2002
Externally published	Yes

Cite this

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title = "Initial growth stages of epitaxial BaTiO3 films on vicinal SrTiO3:Nb (001) substrates",

abstract = "The growth mechanism of epitaxial BaTiO3 films on vicinal Nb-doped SrTiO3 (SrTiO3:Nb) (001) substrate surfaces was studied in terms of surface morphology, crystalline orientation, microstructure, and film/substrate interface. Well-oriented BaTiO3 thin films were grown on SrTiO3 substrates with well-defined terraces by pulsed laser deposition. The regularly terraced TiO2-terminated surfaces of vicinal SrTiO3:Nb (001) substrates were prepared by a definite chemical and thermal treatment. Under our conditions, BaTiO3 seems to grow with a layer-then-island (Stranski-Krastanov) growth mechanism. In order to investigate the orientation and crystallinity of the BaTiO3 films, x-ray diffraction and high-resolution transmission electron microscopy were performed. Ferroelectricity of the BaTiO3 films was proved by electrical measurements performed on Pt/BaTiO3/SrTiO3:Nb heterostructures.",

author = "A. Visinoiu and M. Alexe and Lee, {H. N.} and Zakharov, {D. N.} and A. Pignolet and D. Hesse and U. G{\"o}sele",

year = "2002",

language = "English",

volume = "688",

pages = "285--290",

journal = "Materials Research Society Symposium - Proceedings",

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T1 - Initial growth stages of epitaxial BaTiO3 films on vicinal SrTiO3:Nb (001) substrates

AU - Visinoiu, A.

AU - Alexe, M.

AU - Lee, H. N.

AU - Zakharov, D. N.

AU - Pignolet, A.

AU - Hesse, D.

AU - Gösele, U.

PY - 2002

Y1 - 2002

N2 - The growth mechanism of epitaxial BaTiO3 films on vicinal Nb-doped SrTiO3 (SrTiO3:Nb) (001) substrate surfaces was studied in terms of surface morphology, crystalline orientation, microstructure, and film/substrate interface. Well-oriented BaTiO3 thin films were grown on SrTiO3 substrates with well-defined terraces by pulsed laser deposition. The regularly terraced TiO2-terminated surfaces of vicinal SrTiO3:Nb (001) substrates were prepared by a definite chemical and thermal treatment. Under our conditions, BaTiO3 seems to grow with a layer-then-island (Stranski-Krastanov) growth mechanism. In order to investigate the orientation and crystallinity of the BaTiO3 films, x-ray diffraction and high-resolution transmission electron microscopy were performed. Ferroelectricity of the BaTiO3 films was proved by electrical measurements performed on Pt/BaTiO3/SrTiO3:Nb heterostructures.

AB - The growth mechanism of epitaxial BaTiO3 films on vicinal Nb-doped SrTiO3 (SrTiO3:Nb) (001) substrate surfaces was studied in terms of surface morphology, crystalline orientation, microstructure, and film/substrate interface. Well-oriented BaTiO3 thin films were grown on SrTiO3 substrates with well-defined terraces by pulsed laser deposition. The regularly terraced TiO2-terminated surfaces of vicinal SrTiO3:Nb (001) substrates were prepared by a definite chemical and thermal treatment. Under our conditions, BaTiO3 seems to grow with a layer-then-island (Stranski-Krastanov) growth mechanism. In order to investigate the orientation and crystallinity of the BaTiO3 films, x-ray diffraction and high-resolution transmission electron microscopy were performed. Ferroelectricity of the BaTiO3 films was proved by electrical measurements performed on Pt/BaTiO3/SrTiO3:Nb heterostructures.

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M3 - Article

AN - SCOPUS:0036350283

SN - 0272-9172

VL - 688

SP - 285

EP - 290

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

ER -

Initial growth stages of epitaxial BaTiO₃ films on vicinal SrTiO₃:Nb (001) substrates

Abstract

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