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Fig. 1. Dark-field image using the (11) reflection of SrRuO₃ showing two types of domain structures (white and black). Dark straight lines (marked by an arrow) within the white regions are antiphase boundaries (APBs). First citation in article

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Fig. 2. SAED patterns of the cross-sectional SrRuO₃/SrTiO₃. (a) [001] zone of SrTiO₃. (b), (c), and (d) are the [110], [001], and [111] zones of the SrRuO₃ film, respectively. First citation in article

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Fig. 3. (a) A SAED pattern taken from a plan-view specimen showing the superposition of two 90° rotational [10] zone SAED patterns. (b) and (c) are dark-field images obtained by using weak reflections 1 and 2 from (a), respectively. Fine dark straight lines (marked by arrows) in (b) and (c) are APBs. First citation in article