Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass
Abstract The intermediate-range order of covalently bonded glasses has been extensively studied in terms of their diffraction peaks observed at low scattering angles; these peaks are called the first sharp diffraction peaks (FSDPs). Although the atomic density fluctuations originating from the quasi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-05-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00544-w |
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| _version_ | 1832594615951163392 |
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| author | Akihiko Hirata Shuya Sato Motoki Shiga Yohei Onodera Koji Kimoto Shinji Kohara |
| author_facet | Akihiko Hirata Shuya Sato Motoki Shiga Yohei Onodera Koji Kimoto Shinji Kohara |
| author_sort | Akihiko Hirata |
| collection | DOAJ |
| description | Abstract The intermediate-range order of covalently bonded glasses has been extensively studied in terms of their diffraction peaks observed at low scattering angles; these peaks are called the first sharp diffraction peaks (FSDPs). Although the atomic density fluctuations originating from the quasilattice planes are a critical scientific target, direct experimental observations of these fluctuations are still lacking. Here, we report the direct observation of the atomic density fluctuations in silica glass by energy-filtered angstrom-beam electron diffraction. The correspondence between the local electron diffraction patterns of FSDPs and the atomic configurations constructed based on the X-ray and neutron diffraction results revealed that the local atomic density fluctuations originated from the quasi-periodic alternating arrangements of the columnar chain-like atomic configurations and interstitial tubular voids, as in crystals. We also discovered longer-range fluctuations associated with the shoulder of the FSDP on the low-Q side. The hierarchical fluctuations inherent in materials could aid in the elucidation of their properties and performance. |
| format | Article |
| id | doaj-art-47913bda66b3420aaa81c6fdc390e9c5 |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-47913bda66b3420aaa81c6fdc390e9c52025-01-19T12:28:52ZengNature PortfolioNPG Asia Materials1884-40572024-05-0116111010.1038/s41427-024-00544-wDirect observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glassAkihiko Hirata0Shuya Sato1Motoki Shiga2Yohei Onodera3Koji Kimoto4Shinji Kohara5Department of Materials Science, Waseda UniversityFaculty of Science and Technology, Tokyo University of ScienceUnprecedented-scale Data Analytics Center, Tohoku UniversityCenter for Basic Research on Materials, National Institute for Materials ScienceCenter for Basic Research on Materials, National Institute for Materials ScienceCenter for Basic Research on Materials, National Institute for Materials ScienceAbstract The intermediate-range order of covalently bonded glasses has been extensively studied in terms of their diffraction peaks observed at low scattering angles; these peaks are called the first sharp diffraction peaks (FSDPs). Although the atomic density fluctuations originating from the quasilattice planes are a critical scientific target, direct experimental observations of these fluctuations are still lacking. Here, we report the direct observation of the atomic density fluctuations in silica glass by energy-filtered angstrom-beam electron diffraction. The correspondence between the local electron diffraction patterns of FSDPs and the atomic configurations constructed based on the X-ray and neutron diffraction results revealed that the local atomic density fluctuations originated from the quasi-periodic alternating arrangements of the columnar chain-like atomic configurations and interstitial tubular voids, as in crystals. We also discovered longer-range fluctuations associated with the shoulder of the FSDP on the low-Q side. The hierarchical fluctuations inherent in materials could aid in the elucidation of their properties and performance.https://doi.org/10.1038/s41427-024-00544-w |
| spellingShingle | Akihiko Hirata Shuya Sato Motoki Shiga Yohei Onodera Koji Kimoto Shinji Kohara Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass NPG Asia Materials |
| title | Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass |
| title_full | Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass |
| title_fullStr | Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass |
| title_full_unstemmed | Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass |
| title_short | Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO2 glass |
| title_sort | direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in sio2 glass |
| url | https://doi.org/10.1038/s41427-024-00544-w |
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