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非中心对称的RbNaMgP2O7与前所未有的热诱导增强的第二波生成
Sangen Zhao1, Xiaoyan Yang2, Yi Yang3
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, China.
Journal of the American Chemical Society
|January 19, 2018
概括
研究人员开发了一种新的深紫外 (深紫外) 透明酸盐,RbNaMgP2O7,通过可逆相变表现出增强的第二波生成 (SHG). 这种材料提供了一种超越传统化学设计的SHG增强材料的新方法.
科学领域:
- 材料科学
- 晶体学
- 非线性光学
背景情况:
- 在具有增强第二波生成 (SHG) 的材料中实现深紫外线 (深紫外线) 透明度是具有挑战性的.
- 在深紫外线区域的低透明度限制了当前的材料选择.
研究的目的:
- 报告一种新的非中心对称,深紫外线透明的酸盐材料,RbNaMgP2O7.
- 调查其热诱导的相位过渡及其对SHG特性的影响.
主要方法:
- 合成和表征RbNaMgP2O7.
- 在723K的热诱导相位过渡的研究.
- 对SHG增强背后的机制进行理论分析.
主要成果:
- RbNaMgP2O7具有深紫外透明度和非中心对称性.
- 在723K的可逆相位过渡导致SHG增大约1.5倍.
- 这种转换涉及[P2O7]4-二次体的扭曲.
结论:
- 增强的SHG归因于SHG活性[P2O7]4-二元体沿着极轴的集体对齐.
- 这项工作为SHG增强提供了一个新的物理路径,与化学设计不同.
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