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助熔剂法生长RbBe_2BO_3F_2晶体及热性能研究 被引量：1

Flux Growth and Thermal Properties of RbBe_2BO_3F_2 Crystals
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摘要 本文采用自发成核助熔剂法生长深紫外非线性光学晶体RbBe2BO3F2(RBBF)。研究了不同助熔剂体系的黏度对自发成核的影响,采用Rb2O-NaF-B2O3体系获得了厚度超过2.5 mm的大块透明RbBe2BO3F2晶体。研究了晶体的热学性能,包括熔点、比热、热膨胀系数和热导率,并与KBBF同族晶体进行了比较。在30～300℃温度范围内,RBBF晶体比热是0.70～0.95 J/g·K,大于CBBF晶体。测得RBBF晶体沿c轴的热膨胀系数是z=47.16×10-6K-1,在298 K时沿c轴的热导率是3.04 W/m·K。 RbBe2BO3F2(RBBF) crystals were obtained by the spontaneous nucleation flux method.The influence of different flux systems on spontaneous nucleation were investigated.Large transparent RbBe2BO3F2 single crystals up to 2.5 mm in thickness has been grown from Rb2O-NaF-B2O3 flux system.The therml performance including melting point,specific heat,coefficient of thermal expansion and thermal conductivity have been performed on the crystal and compared with other KBBF family crystals.The specific heat was measured to be 0.70-0.95 J/g·K in the temperature range of 30-300 ℃,which is larger than that of CBBF crystals.The thermal expansion coefficient was measured to be z=47.16×10-6 K-1along the c-axis and the thermal conductivity is 3.04 W/m·K at 298 K.
作者 刘丽娟 徐滔 王晓洋 陈创天
机构地区 中国科学院理化技术研究所中国科学院功能晶体与激光技术重点实验室 中国科学院大学
出处 《人工晶体学报》 EI CAS CSCD 北大核心 2013年第5期779-782,共4页 Journal of Synthetic Crystals
基金 国家自然科学基金重点项目(51132008) 国家重点基础研究发展计划(973计划)(2010CB630701) 国家高技术研究发展计划(863计划)(2011AA030202)
关键词 RbBe2BO3F2晶体 助熔剂法 自发成核 热性能 RbBe2BO3F2 crystal flux method spontaneous nucleation thermal property
分类号 O78 [理学—晶体学]
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参考文献14

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共引文献7

同被引文献15

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  • 10Chen C T, Luo S Y, Wang X Y, Wang G L, Wen X H, Wu H X, Zhang X, Xu Z Y. Deep UV nonlinear opti- cal crystal : RbBe2 ( B03 ) F2 [ J J. Journal of the Optical Society of America B : Optical Physics, 2009, 26 (8) : 1519.

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人工晶体学报
2013年 第5期

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