High-Resolution Transmission Electron Microscopy Observations on Antiphase Boundaries in Barium Lanthanum Magnesium Niobate |
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| Authors: | Hwack Joo Lee Hyun Min Park Yong Won Song Yang Koo Cho Sahn Nahm |
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| Affiliation: | New Materials Evaluation Center, Korea Research Institute of Standards and Science, Taeduk Science Town, Taejon 305–600, Korea;Division of Materials and Metallurgical Engineering, Korea University, Seoul 136–701, Korea |
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| Abstract: | Atomic structural observations on the antiphase boundaries (APBs) in the complex barium lanthanum magnesium niobate perovskite compound Ba0.7La0.3(Mg0.43Nb0.57)O3 (BLMN), which has a 1:1 chemical ordering of B-site cations, were conducted using high-resolution transmission electron microscopy. Using APB contrast, the curved APB was determined to have a ledged structure, with a terrace that was composed of the (111) plane at an atomic level. In APBs with finite widths, microfacets on the (111) planes also were observed. |
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| Keywords: | transmission electron microscopy perovskites microstructure |
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