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Kinetic roughening of a ZnO grain boundary
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View: Figures


Image of FIG. 1.
FIG. 1.

Crystallographic geometry of the bicrystal used and initial microstructures of the grain boundary in the specimen. (a) Schematic diagram of the top view of the bicrystal with a grain boundary with a misorientation relationship of 30°/[0001] bounded by and planes. (b) Scanning electron microscopy image taken during preparation of a cross-section FIB TEM specimen prepared from the bicrystal shown in (a). The resulting FIB specimen had a thickness gradient, assuming a wedge shape. (c) HRTEM image of the grain boundary in the specimen before annealing.

Image of FIG. 2.
FIG. 2.

HRTEM images of the grain boundary in the specimen annealed at . (a) In the region at a specimen thickness of , the grain boundary shows atomic steps. (b) The grain boundary at a thinner specimen thickness of migrates from the into the grain, exhibiting a curved shape. A moiré pattern is observed. Inset of (b): Fourier transform of (b). (c) Enlarged image of the moiré pattern shown in (b). (d) A translational moiré fringe obtained by superposing the two experimentally obtained and grain lattices. (e) Morphology of the grain boundary near the region shown in (b). Inset of (e): Fourier transform of (e).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Kinetic roughening of a ZnO grain boundary