| LiCaAlF_6单晶的非真空坩埚下降法生长 |
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| 引用本文： | 方奇术,王苏静,梁哲,周燕飞,武安华,陈红兵.LiCaAlF_6单晶的非真空坩埚下降法生长[J].宁波大学学报(理工版),2010,23(2):66-70. |
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| 作者姓名： | 方奇术 王苏静 梁哲 周燕飞 武安华 陈红兵 |
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| 作者单位： | 1. 宁波大学宁波市新型功能材料及其制备科学国家重点实验室培育基地,浙江,宁波,315211
2. 中国科学院上海硅酸盐研究所,上海,200050 |
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| 基金项目： | 浙江省自然科学基金(Y4090057);;宁波市自然科学基金(2009610016) |
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| 摘 要： | 以高纯氟化物LiF、CaF2和AlF3为初始试剂,按照精确化学计量比1：1：1摩尔比配料,经高温氟化处理合成严格无水的LiCaAlF6多晶料.将该多晶料密封在铂坩埚中,添加少量聚四氟乙烯粉末,可避免氟化物熔体的氧化与挥发,从而在非真空条件下实现LiCaAlF6单晶的坩埚下降法生长.在单晶生长过程中,炉体温度控制于910～930℃,固液界面温度梯度为30℃.cm-1左右,坩埚下降速率为0.5～1.0mm·h-1,成功生长出无色透明的LiCaAlF6单晶.应用XRD、透射光谱,红外光谱进行了LiCaAlF6单晶基本性质的测试表征.结果表明,该单晶在190～1100nm区域内的光透过率达85%以上.
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| 关 键 词： | LiCaAlF6 氟化处理 单晶生长 坩埚下降法 |
Growth of LiCaAlF6 Single Crystal by Vertical Bridgman Method in Nonvacuum Atmosphere |
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| FANG Qi-shu,WANG Su-jing,LIANG Zhe,ZHOU Yan-fei,WU An-hua,CHEN Hong-bing.Growth of LiCaAlF6 Single Crystal by Vertical Bridgman Method in Nonvacuum Atmosphere[J].Journal of Ningbo University(Natural Science and Engineering Edition),2010,23(2):66-70. |
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| Authors: | FANG Qi-shu WANG Su-jing LIANG Zhe ZHOU Yan-fei WU An-hua CHEN Hong-bing |
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| Institution: | 1.The State Key Laboratory Base of Ningbo Novel Functional Materials and Preparation Science/a>;Ningbo University/a>;Ningbo 315211/a>;China/a>;2.Shanghai Institute of Ceramics/a>;Chinese Academy of Sciences/a>;Shanghai 200050/a>;China |
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| Abstract: | The growth process of single crystal LiCaAlF6 by vertical Bridgman method is reported in this paper.Using LiF,CaF2 and AlF3 as the initial agents,the feed material for the crystal growth is prepared according to the molar ratio of LiF:CaF2:AlF3 =1:1:1.The anhydrous LiCaAlF6 polycrystalline material is synthesized by fluoridation process at elevated temperature.By means of sealing the feed material in a platinum crucible,LiCaAlF6 crystal can be grown using the vertical Bridgman method in a nonvacuum atmosphe... |
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| Keywords: | LiCaAlF6 fluoridation process crystal growth vertical Bridgman method |
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