Potassium bromo-borate K3[B6O10]Br -: A new nonlinear optical material

被引：60

作者：

Al-Ama, A. G. ^{[1
]}

Belokoneva, E. L. ^{[1
]}

Stefanovich, S. Yu. ^{[1
]}

Dimitrova, O. V. ^{[1
]}

Mochenova, N. N. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Crystallog & Crystal Chem, Fac Geol, Moscow 119992, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2006年 / 51卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063774506020088

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A new polar hexaborate, K-3[B6O10]Br (space group R3m), is synthesized under hydrothermal conditions. The radical anion is composed of macallisterite hexaborate blocks 6[3 Delta + 3T] formed by boron triangles and boron tetrahedra. The blocks are Joined together through vertices into a [B6O10](infinity infinity infinity)(2-) zeolite-like framework of a new type. Large K+ cations and Br- anions are located in extended channels that are aligned parallel to rhombohedral translations of the crystal lattice. The structure of the sublattice formed by large ions consists of BrK6 bromo-centered octahedra, which are linked to-ether through vertices into a hexagonally distorted perovskite framework. The perovskite framework is inserted into the boron-oxygen framework so that these two frameworks do not intersect. The nonlinear optical properties of powdered samples of the K-3[B6O10]Br compound are investigated using the second harmonic generation method. It is found that the K-3[B6O10]Br compound exhibits a high nonlinear optical activity that exceeds the activities of the majority of borate compounds and is characteristic of haloid borates of the hilgardite family.

引用

页码：225 / 230

页数：6

共 13 条

[1] ATOMIC DISPLACEMENT RELATIONSHIP TO CURIE TEMPERATURE AND SPONTANEOUS POLARIZATION IN DISPLACIVE FERROELECTRICS [J].