LiGaF2(IO3)2: A mixed-metal gallium iodate-fluoride with large birefringence and wide band gap
LiGaF2(IO3)2: A mixed-metal gallium iodate-fluoride with large birefringence and wide band gap
复制标题
LiGaF2(IO3)2：具有大双折射和宽带隙的混合金属碘酸镓
DOI：
10.1007/s40843-020-1395-x
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发表时间：
2020-07-22
影响因子：
8.1
通讯作者：
Mao, Jiang-Gao
中科院分区：
文献类型：
--
作者：
Chen, Jin;Hu, Chun-Li;Mao, Jiang-Gao
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.
