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Chemical Bond Analysis of Single Crystal Growth of Magnesium Oxide Xue Dongfeng1,Zhang Xu1 (1.State Key Laboratory of Fine Chemicals, Department of Materials Science and Chemical Engineering... of solids and Pauling''s third rule (polyhedral sharing rule) were employed to quantitatively analyze the chemical bonding structure of constituent atoms and single crystal growth. Our analytical results show......
single crystal was grown by the Czochralski method and its perfection was assessed by white beam synchrotron radiation topography. It is found that the growth core and the growth striations are the primary growth defects and they show strong X-ray kinematical contrast in the topographs. Another typical defect in LGS crystal is dislocation. The formation mechanisms of these growth defects in LGS......
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Influence of Thermal Conductivity on Interface Shape during Growth of Sapphire Crystal Using a Heat-Exchanger-Method Lu Chungwei1,Chen Jyh Chen2 (1.Department of Information Management, Jen-Teh... contributed on heat transfer will enhance the heat transport inside the crystalline phase during growth the transparent sapphire crystal using a heat-exchanger-method (HEM). The artificially enhanced thermal......
structure of BaY2F8 was Y-F2-Y, which stretched to the shape of chain along the direction of [001]. And this was an advantaged direction for the crystal growth. The steady shapes of BaY2F8 were...Crystal habit for upconversion laser crystal of BaY2F8 LI Guanghui1,RUAN Yongfeng2,SUN Wei2,ZHANG Shouchao2 (1.School of Commerce, Tianjin University of Commerce, Tianjin 300134, China;2.School......
that the energy of the solid/liquid interface is the lowest during cellular crystal growth of pure magnesium; and the solid/liquid interface is covered by the basal face {0001} and by the crystal face made up... direction is 61.9?. The theoretical analysis results are basically consistent with the experimental results from SUSUMU et al. Key words: magnesium; solidification process; crystal growth; crystal......
Growth, Optical Properties and Defects of High-Doped Yb∶YAl3(BO3)4 Crystal Wang Xuping1,Liang Ximin1,Wang Jiyang1,Zhao Hongyang1,Li Jing1,Zhang Huaijin1 (1.State Key Laboratory of Crystal Materials.... The main defects are cracks, inclusions, dislocations and twins, which of them are more than low-doped crystals. Key words:crystal growth; laser material; defects; [全文内容正在添加中] ......
Growth and characterization of Nd:Sr0.95Ba0.05WO4 single crystal GAO Lihong1,CHEN Jianzhong1,LIN Shukun1,SUN Xiaojuan1 (1.College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou... Sr0.95Ba0.05WO4 and Nd: Sr0.95Ba0.05WO4 single crystals belonged to tetragonal system and I41/a space group. Transparent Nd: Sr0.95Ba0.05WO4 single crystal could be obtained along c-axis by Czochralski method......
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, Shanghai 201800, China) Abstract:In this paper, undoped LaCl3 crystal growth was reported by modified Bridgman method.The starting materials used as charge for crystal growth was found to contain seven... and X-ray induced emission spectra were measured at room temperature, whose peak is at 405 nm. Key words:rare-earth trihalide; crystal growth; optical properties; [全文内容正在添加中] ......