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(Color online) (a) A schematic of the growth of the single crystal embedded in the polycrystalline matrix. (b) An optical micrograph of the region marked by a rectangle in (a).
(Color online) HREM images of the boundary (a) in the fine matrix region indicated by A in Fig. 1(b) and the boundaries between the crystal and the fine matrix indicated by (b) B and (c) C in Fig. 1(b). (b), (c), and (d) EELS analyses across the boundaries within an interval of from the boundary core at the interfaces in (a), (c), and (e), respectively.
(Color online) HREM image of the boundary between the crystal and the fine matrix indicated by C in Fig. 1(b) after additional annealing at for .
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