Finding a Deep-UV Borate BaZnB4O8 with Edge-sharing [BO4] Tetrahedra and Strong Optical Anisotropy

被引：9

作者：

Han, Jian ^{[1
,2
]}

Liu, Kaitong ^{[1
,2
]}

Chen, Long ^{[2
,3
]}

Li, Fuming ^{[1
,2
]}

Yang, Zhihua ^{[1
,2
]}

Zhang, Fangfang ^{[1
,2
]}

Pan, Shilie ^{[1
,2
]}

Mutailipu, Miriding ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Res Ctr Crystal Mat, CAS Key Lab Funct Mat & Devices Special Environm, 40-1 South Beijing Rd, Urumqi 830011, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2023年 / 29卷 / 06期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

birefringent crystal; borate; deep-ultraviolet; edge-sharing; optical anisotropy; GENERALIZED GRADIENT APPROXIMATION; HIGH-PRESSURE PREPARATION; CRYSTAL-STRUCTURE; GROWTH; OXOBORATE; RE; DY;

D O I：

10.1002/chem.202203000

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The polarization modulation of deep-UV light is an important process that incorporates functionality to selectively respond to light-mater interaction. Typically, optical anisotropy is foremost to the use efficiency of deep-UV birefringent crystals. Herein, a new congruently melting polyborate with extremely large birefringence (Delta n((001))=0.14@589.3 nm) and band gap (6.89 eV) is discovered as a high performance birefringent crystal, which breaks the current deadlock of deep-UV polyborates that usually show small birefringence. The rigid tetrahedra, including [ZnO4] and edge-sharing [BO4] tetrahedra, make all the planar [BO3] triangles in the lattice adopt preferential arrangement and thereby lead to an extraordinary large birefringence that is larger than all the deep-UV borates with experimentally measured values. Structural analyses with the additional theoretical calculations were used to study the origin of strong optical anisotropy in BaZnB4O8.

引用

页数：5