Crystal Growth and Characterization of Alexandrite

详细信息    查看全文

• 作者：Denis A. Vinnik ; Dmitry A. Zherebtsov ; Sergey A. Archugov ; Markus Bischoff ; Rainer Niewa
• 刊名：Crystal Growth & Design
• 出版年：2012
• 出版时间：August 1, 2012
• 年：2012
• 卷：12
• 期：8
• 页码：3954-3956
• 全文大小：227K
• 年卷期：v.12,no.8(August 1, 2012)
• ISSN：1528-7505

文摘

Large, high-quality alexandrite single crystals (Cr-doped Al₂BeO₄) with dimensions of up to 120 mm were grown from molten alexandrite-based fluxes in the temperature range of 1800鈥?853 掳C using the Stepanov and Kyropoulos methods. Etching experiments resulted in a maximum pits density of 10⁵ cm^鈥?. Powder X-ray diffraction was used to establish the dependence of unit cell dimensions on the Cr content. Optical absorption spectroscopy (UV鈥搗is) revealed nonlinear absorption dependence on the Cr content.