Microstructure of epitaxial strained BiCrO3 thin films

Details Microstructure of epitaxial strained BiCrO3 thin films Microstructure of epitaxial strained BiCrO3 thin films

2010-05-05

arxiv.org/abs/1005.0735v1

Appl. Phys. Lett. 96, 221904 (2010)

Physics

Condensed Matter

Materials Science

10 pages, 5 figures, to be published in Applied Physics Letters

Scientific paper

10.1063/1.3435486

The structure and microstrucutre of fully-strained BiCrO3 thin films have been investigated by X-rays diffraction and transmission electron microscopy, at room temperature. Interestingly, three structural variants are simultaneously stabilized within the film. While txo of them are consistent with the existing phases in the bulk-below and above the 420 K structural transition, a different phase is identified. The existence of various structures has been attributed to the inhomogeneous distribution of local strains and oxygens resulting from a minimization of the strain-energy at the interface. These findings will open the route to a better understanding of Bi-based perovskites and metastable phases.

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