Fan Huixin, Peng Guang, Lin Chensheng, Chen Kaichuang, Yang Shunda, Ye Ning
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350108, P. R. China.
Inorg Chem. 2020 Jun 1;59(11):7376-7379. doi: 10.1021/acs.inorgchem.0c00945. Epub 2020 May 13.
An alkaline-earth-metal iodate fluoride, Ba(IO)F (), was discovered by introducing F atoms into alkaline-earth-metal iodates via a hydrothermal method. The pseudo-two-dimensional (2D) [BaF] layers and [IO] anionic groups built the crystal structure, which obviously exhibited large anisotropies. The birefringence of was initially tested to be 0.1256 at 589.3 nm. Besides, compared with most reported metal iodate crystals, possesses a large band gap ( = 4.32 eV). Theoretical calculations proved that the excellent optical characteristics can be attributed to [IO] anionic groups and [BaOF] polyhedra.
通过水热法将氟原子引入碱土金属碘酸盐中，发现了一种碱土金属碘酸氟化物Ba(IO)F ()。伪二维(2D) [BaF]层和[IO]阴离子基团构成了晶体结构，该结构明显表现出较大的各向异性。在589.3 nm处测得的双折射最初为0.1256。此外，与大多数已报道的金属碘酸盐晶体相比， 具有较大的带隙( = 4.32 eV)。理论计算证明，优异的光学特性可归因于[IO]阴离子基团和[BaOF]多面体。
