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硅酸钡钛晶体的高温溶液法生长

Crystal Growth of Ba_2TiOSi_2O_7 by High Temperature Solution Method
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摘要 为了选用合适的助熔剂生长Ba_2TiOSi_2O_7晶体,试验了多种不同成分和配比的化学试剂。最终确定了LiF和H_3BO_3摩尔比为5:2复合助熔剂,采用高温溶液法生长出了尺寸为20 mm×10 mm×3mm的较透明Ba_2TiOSi_2O_7晶体。粉末倍频测试结果表明,粒径为88~105μm的Ba_2TiOSi_2O_7粉体的倍频效应约为5.5倍的KDP(d_(36)=4.7×10^(-13)m/V)量级。红外光谱测量证实晶体结构中含有Si_2O_7基团和TiO_5基团。 The Ba2TiOSi207 transparent crystal with the size of 20 mmx 10 minx3 mm was grown with LiF：H3BO3 molar ratio of 5：2 as a composite flux by a high-temperature solution method. The powder second harmonic generation （SHG） effect of Ba2TiOSi2O7 powder with the sizes of 88-105um is about 5.5 times greater than that of KH2PO4 （KDP）. Based on the infrared specmnn, Ba2TiOSi2O7 crystal structure contains Si2O7 and TiO5 anionic groups.
作者 刘剑
机构地区 唐山学院环境与化学工程系 唐山市微纳米材料制备及应用重点实验室
出处 《硅酸盐学报》 EI CAS CSCD 北大核心 2016年第1期112-116,共5页 Journal of The Chinese Ceramic Society
基金 河北省高等学校科学技术研究项目(QN2014332) 唐山市科技计划项目(14130285a) 唐山学院学科建设基金项目(TSC2013003)
关键词 硅酸钡钛晶体 晶体生长 助熔剂 高温溶液法 barium titanium silicate crystals crystal growth flux high temperature solution method
分类号 O782 [理学—晶体学]
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参考文献21

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