Growth of CaF₂ block and dome by gradient freeze technique

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• 作者：Yongjun ; Dong ; Guoqing ; Zhou ; Liangbi ; Su ; Weiqiao ; Yang ; Jun ; Xu
• 关键词：Calcium fluoride (CaF₂) ; Crystal growth ; Dome ; Gradient freeze technique (GF) ; Defects
• 刊名：Materials Letters
• 出版年：2004
• 出版时间：June, 2004
• 年：2004
• 卷：58
• 期：16
• 页码：2157-2160
• 全文大小：222 K

文摘

Calcium fluoride (CaF₂) crystals were grown by gradient freeze technique (GF), and especially a novel shaped crystal growth method was presented to grow dome-shaped crystal. A calcium fluoride dome was successfully grown directly in the shaper we designed. The obtained CaF₂ block and dome demonstrate a high integrity and optical quality. The defects and crystallographic properties were characterized by chemical etching and the FWHM of the rocking curve respectively.