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Fig. 1. Schematic diagram showing six possible growth modes of SrRuO₃ thin film on the (001) substrate of SrTiO₃. Note that while the pseudo-cubic perovskite unit cell of SrRuO₃ is drawn, the cell directions are indexed based on the orthorhombic unit cell. First citation in article

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Fig. 2. (a) Dark-field image formed by the (111) reflection of SrRuO₃ showing two types of domain structures (bright and dark). (b) and (c) SAED patterns from the bright and dark regions showing the [10] and [001] zone of SrRuO₃, respectively. First citation in article

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Fig. 3. (a) SAED pattern from a plan-view specimen showing [110] zone of SrRuO₃. (b) Dark-field image using weak reflection marked by ``X'' in (a), showing one purely X-type domain. First citation in article

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Fig. 4. (a) SAED pattern from the same plan-view specimen as that shown in Fig. 3. (b), (c), and (d) dark-field images using X, Y, and Z reflections, respectively, showing small amount of Y- and Z-type domains existing as islands within the dominant X-type domain. First citation in article