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- Title
(NH<sub>4</sub>)Bi<sub>2</sub>(IO<sub>3</sub>)<sub>2</sub>F<sub>5</sub>: An Unusual Ammonium‐Containing Metal Iodate Fluoride Showing Strong Second Harmonic Generation Response and Thermochromic Behavior.
- Authors
Fan, Huixin; Lin, Chensheng; Chen, Kaichuang; Peng, Guang; Li, Bingxuan; Zhang, Ge; Long, Xifa; Ye, Ning
- Abstract
An ammonium‐containing metal iodate fluoride compound, (NH4)Bi2(IO3)2F5, featuring a two‐dimensional double‐layered framework constructed by [BiO2F5]6− and [BiO4F4]9− polyhedra, as well as [IO3]− groups, was successfully synthesized. The well‐ordered alignment of these SHG‐active units leads to an extraordinary strong SHG response of 9.2 times that of KDP. Moreover, this compound possesses a large birefringence (Δn=0.0690 at 589.3 nm), a wide energy band gap (Eg=3.88 eV), and a high laser damage threshold (LDT; 40.2×AgGaS2). In particular, thermochromic behavior was observed for the first time in this type of compound. Such multifunctional crystals will expand the application of nonlinear optical materials.
- Subjects
SECOND harmonic generation; NONLINEAR optical materials; METALS; FLUORIDES; LASER damage; BIREFRINGENCE
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 13, p5306
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201913287