Large bi-axial tensile strain effect in epitaxial BiFeO₃ film grown on single crystal PrScO₃.

ABSTRACT: A BiFeO₃ film is grown epitaxially on a PrScO₃ single crystal substrate which imparts ~ 1.45% of biaxial tensile strain to BiFeO₃ resulting from lattice misfit. The biaxial tensile strain effect on BiFeO₃ is investigated in terms of crystal structure, Poisson ratio, and ferroelectric domain structure. Lattice resolution scanning transmission electron microscopy, precession electron diffraction, and X-ray diffraction results clearly show that in-plane interplanar distance of BiFeO₃ is the same as that of PrScO₃ with no sign of misfit dislocations, indicating that the biaxial tensile strain caused by lattice mismatch between BiFeO₃ and PrScO₃ are stored as elastic energy within BiFeO₃ film. Nan

SUBMITTER: Bae IT 

PROVIDER: S-EPMC10624869 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature