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Stripe domain structure in epitaxial (001) thin films on orthorhombic substrate
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View: Figures


Image of FIG. 1.
FIG. 1.

The 3D schematic indicating the as-grown ferroelastic and ferroelectric domain structure of the film. is represented by red arrows for two domain variants and and shaded area represents domain wall. The domains are tilted oppositely by . The substrate is represented with an orientation matched monoclinic unit cell. All angular distortions are exaggerated for clarity. Beneath are approximately collinear orthorhombic and pseudocubic coordinates systems.

Image of FIG. 2.
FIG. 2.

AFM topography (a) of a film on substrate and a dark field TEM cross section (b) of the film on substrate. A high resolution image is shown of a vertical domain boundary (c) (marked with arrows).

Image of FIG. 3.
FIG. 3.

Detailed RSM maps near the and reflections at two orthogonal in-plane sample orientations [ (a) and (b)]. The angle is a measure of domain tilting due to domain wall coherency. Below are two off-axis RSMs measured at (c) and at (d).

Image of FIG. 4.
FIG. 4.

Phase field simulation of on exhibiting the same stripe- vertical domain walls observed experimentally.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Stripe domain structure in epitaxial (001) BiFeO3 thin films on orthorhombic TbScO3 substrate