BaGeFQ（Q = S，Se）和BaGeFSe：具有增强双折射的新型氟基卤硫化物。
BaGeFQ (Q = S, Se) and BaGeFSe: new F-based chalcohalides with enhanced birefringence.
作者信息
Li Kaixuan, Wu Hongping, Yu Hongwei, Hu Zhanggui, Wang Jiyang, Wu Yicheng
机构信息
Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China.
出版信息
Chem Commun (Camb). 2024 Oct 29;60(87):12734-12737. doi: 10.1039/d4cc04530k.
Three new F-based chalcohalides, BaGeFQ (Q = S, Se) and BaGeFSe, have been successfully synthesized. On going from BaGeFSe (Δ = 0.063@1064 nm) to BaGeFQ (Q = S, Se) (Δ = 0.109 and 0.103@1064 nm, respectively), the birefringence doubled. The structure-property relationship study shows that the enhanced birefringence originates from the modulation of the configuration of the ionic lattices and highly polymerized covalent lattices. This provides not only promising IR birefringent crystals, BaGeFQ, but also some insights into the design of IR birefringent materials.
三种新型氟基卤化物BaGeFQ（Q = S，Se）和BaGeFSe已成功合成。从BaGeFSe（在1064nm处Δ = 0.063）到BaGeFQ（Q = S，Se）（在1064nm处分别为Δ = 0.109和0.103），双折射增加了一倍。结构-性能关系研究表明，增强的双折射源于离子晶格和高度聚合的共价晶格构型的调制。这不仅提供了有前景的红外双折射晶体BaGeFQ，还为红外双折射材料的设计提供了一些见解。
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