Correlation between surface-crystallized ZnO and the amount of Al 2O3 in borate-based glass-ceramics

Hirokazu Masai; Takahiro Ueno; Yoshihiro Takahashi; Takumi Fujiwara

doi:10.1111/j.1551-2916.2011.04604.x

Correlation between surface-crystallized ZnO and the amount of Al ₂O₃ in borate-based glass-ceramics

Hirokazu Masai, Takahiro Ueno, Yoshihiro Takahashi, Takumi Fujiwara

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The correlation between the Al₂O₃ content and the crystallization behavior of the oxide semiconductor ZnO in 5CaO-25B ₂O₃-45ZnO-xAl₂O₃-10K ₂O-15SiO₂ (CaBZAKSx) glass-ceramics was investigated, with a particular focus on the c-oriented crystallization behavior of ZnO. C-oriented precipitation of ZnO crystallites in glass-ceramics is brought about by the in-plane crystal growth of ZnO along the a-axis. Addition of Al ₂O₃ promotes the formation of ZnO₄ rather than ZnO₆ in the mother glass, and the ZnO₄ unit affects the nucleation and selective crystallization of ZnO that also takes the four-coordination state of Zn. The present results suggest that crystallization of ZnO from multi-component glass is also dominated by the local coordination state of the mother glass.

Original language	English
Pages (from-to)	2452-2457
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	94
Issue number	8
DOIs	https://doi.org/10.1111/j.1551-2916.2011.04604.x
Publication status	Published - 2011 Aug

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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abstract = "The correlation between the Al2O3 content and the crystallization behavior of the oxide semiconductor ZnO in 5CaO-25B 2O3-45ZnO-xAl2O3-10K 2O-15SiO2 (CaBZAKSx) glass-ceramics was investigated, with a particular focus on the c-oriented crystallization behavior of ZnO. C-oriented precipitation of ZnO crystallites in glass-ceramics is brought about by the in-plane crystal growth of ZnO along the a-axis. Addition of Al 2O3 promotes the formation of ZnO4 rather than ZnO6 in the mother glass, and the ZnO4 unit affects the nucleation and selective crystallization of ZnO that also takes the four-coordination state of Zn. The present results suggest that crystallization of ZnO from multi-component glass is also dominated by the local coordination state of the mother glass.",

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