Journal
SOLID STATE SCIENCES
Volume 129, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2022.106898
Keywords
Bromine-containing iodate; X-ray diffraction; Thermal property; Electronic band structure; Optical property
Funding
- key project of scientific research plan of colleges and universities in Xinjiang [XJEDU2018I015]
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In this study, the first bromine-containing iodate single crystal Pb2IO3Br3 was successfully synthesized. The crystal structure was determined by X-ray diffraction and the relationship between crystal structure and optical properties was investigated through first-principle calculations.
The single crystal of Pb2IO3Br3 was successfully synthesized by the hydrothermal method, which is the first case of bromine-containing iodate. The polycrystalline powder of the compound was synthesized and its purity was characterized by X-ray single crystal diffraction. Pb2IO3Br3 crystallized in the space group P 1(-) (No. 2). In the structure of Pb2IO3Br3, the isolated [IO3]- groups are in a reverse arrangement to fill in the tunnels of the threedimensional network that is composed of [PbBrn] polyhedra. In addition, first-principle calculations have been performed to investigate the relationship between the crystal structure and the optical properties. The result indicates Pb2IO3Br3 possesses a moderate birefringence (delta n = 0.064, lambda = 1064 nm), which is mainly originated from the umbrella-like [IO3] groups and the [PbOBr] polyhedra.
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