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説明:

Understanding the nucleation mechanism in glass is crucial for the development of new glass-ceramic materials. Herein, we report the structure of a commercially important glass-ceramic ZrO2-doped lithium aluminosilicate system during its initial nucleation stage. We conducted an X-ray multiscale analysis, and this analysis was used to observe the structure from the atomic to the nanometer scale by using diffraction, small-angle scattering, absorption, and anomalous scattering techniques. The inherent phase separation between the Zr-rich and Zr-poor regions in the pristine glass was enhanced by thermal treatment without changing the spatial geometry at the nanoscale. Element-specific pair distribution function analysis using anomalous X-ray scattering data showed the formation of a liquid ZrO2-like local structural motif and edge sharing between the ZrOx polyhedra and (Si/Al)O4 tetrahedra during the initial nucleation stage. Furthermore, the local structure of the Zr4+ ions resembled a cubic or tetragonal ZrO2 crystalline phase and formed after 2 h of annealing the pristine glass. Therefore, the Zr-centric periodic structure formed in the early stage of nucleation was potentially the initial crystal nucleus for the Zr-doped lithium aluminosilicate glass-ceramic.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Glass, Glass ceramics, Anomalous X-ray scattering

刊行年月日: 2024-04-19

出版者: Springer Science and Business Media LLC

掲載誌:

• NPG Asia Materials (ISSN: 18844057) vol. 16 issue. 1 22

研究助成金:

• MEXT | Japan Society for the Promotion of Science 20H05878
• MEXT | Japan Society for the Promotion of Science 20H05881
• MEXT | Japan Society for the Promotion of Science 19K05648

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41427-024-00542-y

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更新時刻: 2024-04-19 16:30:15 +0900

MDRでの公開時刻: 2024-04-19 16:30:15 +0900