| LiGaF2(IO3)2:同时展现出优异的双折射率和宽带隙的新型碘酸盐氟化物晶体 |
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| 引用本文： | 陈瑾,胡春丽,毛江高. LiGaF2(IO3)2:同时展现出优异的双折射率和宽带隙的新型碘酸盐氟化物晶体[J]. SCIENCE CHINA Materials, 2021, 0(2): 400-407 |
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| 作者姓名： | 陈瑾 胡春丽 毛江高 |
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| 作者单位： | State Key Laboratory of Structural Chemistry;University of the Chinese Academy of Sciences |
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| 基金项目： | the National Natural Science Foundation of China(21875248,21921001,and 21975256);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB20000000);the 100 Talents Project of Fujian Province。 |
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| 摘 要： | 本文中,我们通过水热合成得到了首例混合碱金属镓碘酸盐氟化物,即LiGaF2(IO3)2,其晶体结构中包含了一种新型的二维阴离子层,即[GaF2(IO3)2]^-层.该二维层是由[Ga2F4(IO3)6]^4-二聚体通过碘酸根基团进一步桥连而得的.LiGaF2(IO3)2具有4.33 eV的宽带隙和230 nm的紫外截止...
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| 关 键 词： | 紫外波段 双折射率 宽带隙 碘酸盐 光学晶体 混合碱 八面体 晶体结构 |
LiGaF2(IO3)2:A mixed-metal gallium iodate-fluoride with large birefringence and wide band gap |
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| Jin Chen,Chun-Li Hu,Jiang-Gao Mao. LiGaF2(IO3)2:A mixed-metal gallium iodate-fluoride with large birefringence and wide band gap[J]. , 2021, 0(2): 400-407 |
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| Authors: | Jin Chen Chun-Li Hu Jiang-Gao Mao |
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| Affiliation: | (State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,350002,China;University of the Chinese Academy of Sciences,Beijing,100039,China) |
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| Abstract: | The first mixed alkali-metal gallium iodate-fluoride,namely,LiGaF2(IO3)2,was successfully obtained under hydrothermal conditions.The structure of LiGaF2(IO3)2 features a novel two-dimensional(2D)[GaF2(IO3)2]layer composed of[Ga2F4(IO3)6]4 dimers further bridged by(IO3)groups.LiGaF2(IO3)2 exhibits a wide band gap of 4.33 eV,corresponding to the ultraviolet(UV)absorption edge of 230 nm.Calculations of linear optical property revealed that LiGaF2(IO3)2 has a remarkably large birefringence of 0.181@1064 nm and 0.206@532 nm,indicating that it is a potential birefringent material that could be used from visible to UV region.This study provides a new method for the future discovery of promising optical crystals. |
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| Keywords: | metal iodate-fluoride birefringent material band gap enlargement theoretical calculations |
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