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Rosette screw arms created by -domain structures and dislocations in barium titanate during nanoindentation
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View: Figures


Image of FIG. 1.
FIG. 1.

Typical load-penetration curves for up to (a) and (b) loads in -domain of {001} .

Image of FIG. 2.
FIG. 2.

Topography (a) and PFM (b) and (c) images of the area around a indent in a -domain of {001} . Black lines correspond to section scans given in Fig. 3. The horizontal stripes in (a) and (b) as well as the vertical stripes in (c) are artifacts due to the strong topography change around the indent. (c) is taken by turning the sample by 90% and, therefore, the stripes are also in this direction. The corresponding topography image, which is not shown, has the same vertical lines.

Image of FIG. 3.
FIG. 3.

Section scans of the topography (a), the signal (b) along the lines shown in Fig. 2, together with their interpretation (c). The dotted line in (b) is the ideal signal corresponding to the model in (c).

Image of FIG. 4.
FIG. 4.

Three-dimensional image (a) of an indent in a -domain with a section scan (b) along the indicated line showing steps of about , which are interpreted as dislocations steps.

Image of FIG. 5.
FIG. 5.

Interpretation of Fig. 4(b) showing edge dislocations along {110} planes.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Rosette screw arms created by ac-domain structures and dislocations in barium titanate during nanoindentation