LOW-TEMPERATURE MONOCLINIC PHASE IN EPITAXIAL (001) BARIUM TITANATE ON (001) CUBIC SUBSTRATES

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Abstract:

The possibility of the existence of a low temperature monoclinic phase in epitaxial (001) BaTiO3 films on a (001) compressive substrate is analyzed theoretically and compared to recent experimental data from literature. There is good agreement between the theoretical findings and the experimentally observed behavior. The formation of the monoclinic phase arises from the point group reduction due to the rotation of the polarization vector commensurate with the variations in the in-plane strain state.

Keywords: Ferroelectric thin films; epitaxy; monoclinic phase; thermodynamics

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/10584580802451371

Affiliations: 1: Max Planck Institute for Microstructure Physics, Weinberg, Halle-Saale, Germany 2: Materials Science & Engineering Program, CMBE Department & Institute of Materials Science, University of Connecticut, Storrs, CT, USA

Publication date: January 1, 2008

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