Three dimensional domain structure in epitaxial barium titanate thin films

D. J. Towner, T. J. Lansford, B. W. Wessels

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The three dimensional domain structure of barium titanate thin films was determined using a serial sectioning technique. The domain structure varied sharply through the film thickness, being primarily a-oriented near the substrate and increasingly c-oriented away from this interface. The variation in domain structure is explained in terms of a strain gradient due to partial relaxation of epitaxial coherency strains. The refractive index also varied through the film thickness. A simple relationship based on areal fraction of each domain type aptly described the changes in refractive index with domain structure. These results indicate the importance of understanding three-dimensional domain structure and its impact on film properties.

Original languageEnglish (US)
Pages (from-to)89-93
Number of pages5
JournalJournal of Electroceramics
Volume13
Issue number1-3
DOIs
StatePublished - Jul 2004

Keywords

  • Domain
  • Ferroelectric
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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