Bridgman growth of LiYF_4 single crystal in nonvacuum atmosphere |
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| Authors: | Qishu Fang Hongbing Chen Fang Xu Sujing Wang Zhe Liang Chengyong Jiang State Key Base of Functional Materials Its Preparation Science |
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| Affiliation: | Qishu Fang,Hongbing Chen,Fang Xu,Sujing Wang,Zhe Liang,and Chengyong Jiang State Key Base of Functional Materials and Its Preparation Science,Institute of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China |
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| Abstract: | Using LiF and YF3 as starting materials,we prepare feed material from fluorides according to the molar ratio of LiF:YF3=51.5:48.5.The anhydrous LiYF4 polycrystalline material is synthesized via the fluoridation process with a dried HF flow at elevated temperature.By charging the feed material and adding a small amount of active carbon powder in a sealed platinum crucible,the crystal can be grown via the vertical Bridgman method in a nonvacuum atmosphere.This is possible because the oxidization and volatiliz... |
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