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

Alina Visinoiu, Marin Alexe, Ho Nyung Lee, D N Zakharov, Alain Pignolet, Dietrich Hesse, Ulrich Gosele

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The growth mechanism of epitaxial BaTiO3 films on vicinal Nb-doped SrTiO3 (srTiO(3):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 election microscopy were performed. Ferroelectricity of the BaTiO3 films was proved by electrical measurements performed on Pt/BaTiO3/SrTiO3:Nb heterostructures.
Original languageEnglish
Title of host publicationFERROELECTRIC THIN FILMS X
Subtitle of host publication Book Series: MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS
Pages285
Volume688
Publication statusPublished - 2002

Publication series

NameMATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS
PublisherFERROELECTRIC THIN FILMS X
Volume688
ISSN (Print)0272-9172

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    Visinoiu, A., Alexe, M., Lee, H. N., Zakharov, D. N., Pignolet, A., Hesse, D., & Gosele, U. (2002). Initial growth stages of epitaxial BaTiO3 films on vicinal SrTiO3 : Nb (001) substrates. In FERROELECTRIC THIN FILMS X: Book Series: MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS (Vol. 688, pp. 285). (MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS; Vol. 688).