Solubility and optical activity of Bi₁₂SiO₂₀ crystals

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• 作者：Xiaoling He^a ; Haitao Zhou^a ; Weining Zhou^a ; Zhanggui Hu^b ; Changlong Zhang^a ; ^{glzhchl@sina.com} ; Hande Huo^a ; Jinliang Wang^a ; Yanbin Zuo^a ; Fuhua Lu^a
• 关键词：A1. Optical activity ; A2. Hydrothermal crystal growth ; B1. Bismuth compounds ; B2. Photorefractive
• 刊名：Journal of Crystal Growth
• 出版年：2012
• 期刊代码：49_00220248
• 类别：ch
• 出版时间：15 July, 2012
• 卷：351
• 期：1
• 页码：182-187
• 文件大小：756 K

摘要

In this paper the solubility and optical activity of Bi₁₂SiO₂₀ (BSO) single crystals grown in aqueous NaOH under hydrothermal conditions were reported. BSO was found to have a positive solubility coefficient from 350 to 400 掳C in 0.5-3 M NaOH, as well as a positive dependence on mineralizer concentration. The reason why additional SiO₂ should be introduced in the mineralizer to grow high quality BSO was analyzed. High quality and colorless BSO crystals were grown using 4 M NaOH as a mineralizer and additional 3 wt%SiO₂ introduced in the mineralizer. Results showed that the optical activity of hydrothermal colorless BSO was superior to that of BSO grown by the Czochralski (Cz) method.