Effect of in-plane strain anisotropy on (011) epitaxial BaTiO3 and PbTiO3 thin films | Zendy

Wenhui Ma | Zendy; Fei Wang | Zendy

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Effect of in-plane strain anisotropy on (011) epitaxial BaTiO3 and PbTiO3 thin films

Author(s) -

Wenhui Ma,

Fei Wang

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4995464

Subject(s) - epitaxy , materials science , condensed matter physics , anisotropy , piezoelectricity , thin film , phenomenological model , ferroelectricity , polarization (electrochemistry) , crystallography , dielectric , optics , composite material , chemistry , nanotechnology , optoelectronics , physics , layer (electronics)

Misfit strain phase diagrams of single-domain (011) epitaxial BaTiO3 and PbTiO3 thin films are computed using a thermodynamic phenomenological approach. In the case of (001) epitaxial films, the two orthogonal in-plane misfit strains are equivalent. For (011) epitaxial films, however, the two substrate constraints exert quantitatively different influences due to crystal anisotropy. Effects of preferential strain relaxation and arbitrary in-plane strains are investigated, and similarity and contrast of BaTiO3 and PbTiO3 phase diagrams are revealed. Impact of anisotropy of in-plane constraint on polarization, dielectric and piezoelectric properties is explored, and the calculated structural transitions and out-of-plane lattice strain are compared with relevant theoretical and experimental data reported in the literature

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