) (Ln = La,Ce和Gd):混合金属硫酸盐-硫酸盐作为性能良好的红外非线性光学材料
Ya-Xiang Han1,2, Chun-Li Hu1, Jiang-Gao Mao1
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|September 19, 2023
概括
第一个硫酸盐-硫酸盐,Ca2Ln(BS3)(SiS4),表现出极好的红外非线性光学特性. 这些新材料为先进的光学应用提供了强大的第二波生成和高损坏值.
科学领域:
- 固态化学 固态化学
- 材料科学是一种材料科学.
- 无机化学 无机化学 无机化学
背景情况:
- 对于开发先进的光学材料来说,对金属化物的研究至关重要.
- 铁酸盐和铁酸盐是具有潜在非线性光学 (NLO) 特性的化合物类.
- 开发新的混合离子化合物可以导致协同性能增强.
研究的目的:
- 合成和描述新型的硫酸盐-硫酸盐化合物.
- 研究它们的晶体结构和物理性质.
- 评估它们作为红外非线性光学材料的潜力.
主要方法:
- 为了合成,使用了高温固态反应.
- 使用X射线结晶学来确定晶体结构.
- 描述了光学和热性质,包括第二波生成 (SHG) 和激光诱导损伤值 (LIDT).
主要成果:
- 硫酸盐-硫酸盐的第一个例子,Ca2Ln(BS3)(SiS4) (Ln = La,Ce,Gd),已经成功合成.
- 这些化合物在极地空间组P63mc中结晶,具有具有离散[BS3]3−和[SiS4]4−离子的新型3D结构.
- 这些材料具有强烈的相匹配SHG (1.1-1.2xAgGaS2),高LIDT (7-10xAgGaS2),宽传导 (0.45-11μm),高热稳定性 (>800°C) 和大双断率 (0.126-0.149).
结论:
- 将[BS3]3−和[SiS4]4−单元结合在一起的合理设计对于创建有希望的红外NLO材料是有效的.
- 理论计算表明,来自LnS6,BS3和SiS4组的协同效应有助于大型SHG.
- 这项工作扩大了金属化物家族,并为混合离子硫酸盐提供了新的合成途径.
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