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Ba2M(C3N3O3)2 (M = Mg, Ca): Potential UV Birefringent Materials with Strengthened Optical Anisotropy Originated from (C3N3O3)3− Group

Abstract

Demands for UV birefringent materials are growing dramatically owing to rapid development of ultraviolet technology. Here, a new family of UV birefringent materials, Ba2Mg(C3N3O3)2 (BMCY) and Ba2Ca(C3N3O3)2 (BCCY) are successful discovered. It is the first time that the excellent birefringent properties of cyanurates have been studied. These materials exhibit an extremely large birefringence (Δn = 0.728−0.351, 0.771−0.346 from 230 nm to 800 nm for BMCY and BCCY respectively), much larger than that of the commercial UV birefringent crystal α-BaB2O4 (α-BBO) (Δn = 0.12@532 nm). Our study indicates that the impressive optical properties of BMCY and BCCY stem from the strengthened optical anisotropy of planar (C3N3O3)3− group compared with the isoelectronic (B3O6)3− group. Besides, its congruent-melting property makes it feasible to grow bulk crystal by the Bridgman-Stockbarger technique. The extraordinary properties of BMCY and BCCY may shed light on a new path to explore birefringent materials of practical application.

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Publication details

The article was received on 18 Sep 2018, accepted on 17 Oct 2018 and first published on 24 Oct 2018


Article type: Paper
DOI: 10.1039/C8TC04710C
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Ba2M(C3N3O3)2 (M = Mg, Ca): Potential UV Birefringent Materials with Strengthened Optical Anisotropy Originated from (C3N3O3)3− Group

    Z. Li, F. Liang, Y. Guo, Z. Lin, J. Yao, G. Zhang, W. Yin, Y. Wu and C. Chen, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC04710C

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