Strain-induced creation and switching of anion vacancy layers in perovskite oxynitrides
| العنوان: | Strain-induced creation and switching of anion vacancy layers in perovskite oxynitrides |
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| المؤلفون: | Masatomo Yashima, Takao Mori, Shunsaku Kitagawa, Wenhao Sun, Takahiro Maruyama, Kotaro Fujii, Takashi Honda, Toshiya Otomo, Akira Chikamatsu, Shunsuke Yamashita, Kazutaka Ikeda, Koji Kimoto, Masayuki Ochi, Masahito Sano, Kenji Ishida, Tetsuya Hasegawa, Daiichiro Sekiba, Yasushi Hirose, Fumitaka Takeiri, Hiroshi Takatsu, Kazuhiko Kuroki, Nana Izumo, Craig M. Brown, Morito Namba, Yuki Sugisawa, Hiroshi Kageyama, Takahide Nakashima, Takafumi Yamamoto |
| المصدر: | Nature Communications Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020) |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Electronic materials, Science, Superlattice, Oxide, General Physics and Astronomy, 02 engineering and technology, Substrate (electronics), 010402 general chemistry, Epitaxy, 01 natural sciences, Article, General Biochemistry, Genetics and Molecular Biology, chemistry.chemical_compound, Vacancy defect, Thin film, Perovskite (structure), Multidisciplinary, Heterojunction, Solid-state chemistry, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Chemical physics, 0210 nano-technology |
| الوصف: | Perovskite oxides can host various anion-vacancy orders, which greatly change their properties, but the order pattern is still difficult to manipulate. Separately, lattice strain between thin film oxides and a substrate induces improved functions and novel states of matter, while little attention has been paid to changes in chemical composition. Here we combine these two aspects to achieve strain-induced creation and switching of anion-vacancy patterns in perovskite films. Epitaxial SrVO3 films are topochemically converted to anion-deficient oxynitrides by ammonia treatment, where the direction or periodicity of defect planes is altered depending on the substrate employed, unlike the known change in crystal orientation. First-principles calculations verified its biaxial strain effect. Like oxide heterostructures, the oxynitride has a superlattice of insulating and metallic blocks. Given the abundance of perovskite families, this study provides new opportunities to design superlattices by chemically modifying simple perovskite oxides with tunable anion-vacancy patterns through epitaxial lattice strain. Using strain to control oxynitride properties. 京都大学プレスリリース. 2020-12-01. 原子空孔の配列を制御する新手法の発見. 京都大学プレスリリース. 2020-12-02. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2041-1723 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f67809e38619d3c292471884eed184c1 http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100837878 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f67809e38619d3c292471884eed184c1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20411723 |
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