Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering
Vanadium dioxide (VO2) material, known for changing physical properties due to metal-insulator transition (MIT) near room temperature, has been reported to undergo a phase change depending on the strain. This fact can be a significant problem for nanoscale devices in VO2, where the strain field cove...
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Taylor & Francis Group
2023-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/14686996.2022.2150525 |
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| author | Yuichi Ashida Takafumi Ishibe Jinfeng Yang Nobuyasu Naruse Yoshiaki Nakamura |
| author_facet | Yuichi Ashida Takafumi Ishibe Jinfeng Yang Nobuyasu Naruse Yoshiaki Nakamura |
| author_sort | Yuichi Ashida |
| collection | DOAJ |
| description | Vanadium dioxide (VO2) material, known for changing physical properties due to metal-insulator transition (MIT) near room temperature, has been reported to undergo a phase change depending on the strain. This fact can be a significant problem for nanoscale devices in VO2, where the strain field covers a large area fraction, spatially non-uniform, and the amount of strain can vary during the MIT process. Direct measurement of the strain field distribution during MIT is expected to establish a methodology for material phase identification. We have demonstrated the effectiveness of geometric phase analysis (GPA), high-resolution transmission electron microscopy techniques, and transmission electron diffraction (TED). The GPA images show that the nanoregions of interest are under tensile strain conditions of less than 0.4% as well as a compressive strain of about 0.7% (Rutile phase VO2[100] direction), indicating that the origin of the newly emerged TED spots in MIT contains a triclinic phase. This study provides a substantial understanding of the strain-temperature phase diagram and strain engineering strategies for effective phase management of nanoscale VO2. |
| format | Article |
| id | doaj-art-b2f48bf4ea804dc899f1086dcaeef56f |
| institution | DOAJ |
| issn | 1468-6996 1878-5514 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj-art-b2f48bf4ea804dc899f1086dcaeef56f2025-08-20T02:42:51ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142023-12-0124110.1080/14686996.2022.2150525Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineeringYuichi Ashida0Takafumi Ishibe1Jinfeng Yang2Nobuyasu Naruse3Yoshiaki Nakamura4Graduate School of Engineering and Science, Osaka University, Toyonaka, JapanGraduate School of Engineering and Science, Osaka University, Toyonaka, JapanThe Institute of Scientific and Industrial Research, Osaka University, Ibaraki, JapanDepartment of Fundamental Bioscience, Shiga University of Medical Science, Otsu, JapanGraduate School of Engineering and Science, Osaka University, Toyonaka, JapanVanadium dioxide (VO2) material, known for changing physical properties due to metal-insulator transition (MIT) near room temperature, has been reported to undergo a phase change depending on the strain. This fact can be a significant problem for nanoscale devices in VO2, where the strain field covers a large area fraction, spatially non-uniform, and the amount of strain can vary during the MIT process. Direct measurement of the strain field distribution during MIT is expected to establish a methodology for material phase identification. We have demonstrated the effectiveness of geometric phase analysis (GPA), high-resolution transmission electron microscopy techniques, and transmission electron diffraction (TED). The GPA images show that the nanoregions of interest are under tensile strain conditions of less than 0.4% as well as a compressive strain of about 0.7% (Rutile phase VO2[100] direction), indicating that the origin of the newly emerged TED spots in MIT contains a triclinic phase. This study provides a substantial understanding of the strain-temperature phase diagram and strain engineering strategies for effective phase management of nanoscale VO2.https://www.tandfonline.com/doi/10.1080/14686996.2022.2150525VO2 strained statesphase transition controlgeometric phase analysisVO2 nanostructure |
| spellingShingle | Yuichi Ashida Takafumi Ishibe Jinfeng Yang Nobuyasu Naruse Yoshiaki Nakamura Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering Science and Technology of Advanced Materials VO2 strained states phase transition control geometric phase analysis VO2 nanostructure |
| title | Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering |
| title_full | Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering |
| title_fullStr | Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering |
| title_full_unstemmed | Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering |
| title_short | Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO2 engineering |
| title_sort | quantitative spatial mapping of distorted state phases during the metal insulator phase transition for nanoscale vo2 engineering |
| topic | VO2 strained states phase transition control geometric phase analysis VO2 nanostructure |
| url | https://www.tandfonline.com/doi/10.1080/14686996.2022.2150525 |
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