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K3Sb2(HPO4)2(PO4)F2:具有一维链状结构的优异紫外磷酸盐双折射材料
K3Sb2(HPO4)2(PO4)F2: Excellent UV Phosphite Birefringent Material with One-Dimensional Chain Structure
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- DOI:
- 作者:
- 刘昱希，邹国红
LIU Yuxi, ZOU Guohong
- 作者单位:
- 四川大学 化学学院，四川 成都 610065
College of Chemistry, Sichuan University, Chengdu 610065, China
- 关键词:
- 晶体结构；双折射材料；倍频效应；一维链状；孤对电子；磷酸盐
crystal structure; birefringence material; second harmonic generation effect; one-dimensional chain; lone pair electron; phosphate
- 摘要:
- 双折射材料具有调制偏振光的能力，在偏振器件的制造中发挥重要作用。 几种已经商业化的双折射材料，
受到它们自身透光区窄、双折射率小、晶体质量差等固有缺陷的限制而无法得到广泛应用。 因此，设计与合成具有良好
性能的双折射材料仍然是当前光学材料研究的重要课题。 本文报道了一例由离子热法合成的双折射材料 K3Sb2(HPO4)2-
(PO4)F2。 它具有独特的一维链状结构，表现出短的紫外截止边(272 nm)、大的双折射率(0.11@546 nm)、适中的倍频效应
(0.1×KDP)及良好的热稳定性，是一例具有潜在应用价值的近紫外光学材料。
Birefringent materials with the ability to modulate polarized light, play an important role in the manufacture of polarization devices. Several commercial birefringent materials cannot be widely used due to their inherent defects such as narrow light transmission area, low birefringence index and poor crystal quality. Therefore, the design and synthesis of birefringent materials with good performance is still an important topic in the current research of optical materials. A case of the birefringent material K3Sb2(HPO4)2(PO4)F2 prepared by the ionothermal synthesis method is reported in this paper. It has a unique one-dimensional chain structure with a short UV cut-off edge (272 nm), large birefringence (0.11@546 nm), moderate second harmonic generation (SHG) effect (0.1×KDP) and good thermal stability, which means that the compound is a promising UV optical material.