New hilgardite-group polyborate Pb2[B5O9]Br with high optical nonlinearity

被引：27

作者：

Belokoneva, EL ^{[1
]}

Kabalov, YK

Dimitrova, OV

Stefanovich, SY

机构：

[1] Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119992, Russia

[2] LY Karpov Phys Chem Res Inst, Moscow 103064, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2003年 / 48卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1541741

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

New anhydrous lead borate Pb-2[B5O9]Br (sp. gr. Pnn2) was synthesized by the hydrothermal method. The second harmonic generation from polycrystalline samples of Pb-2[B5O9]Br is characterized by a higher signal than that observed in powdered LiB3O5. The crystal structure of the new hilgardite-group compound was refined by the Rietveld method. Analysis of the known orthorhombic polar varieties of hilgardites, including the new compound, showed that their boron-oxygen frameworks are occupied by the Pb2+, Ca2+, Eu2+, and Ba2+ cations; the Cl-, Br-, and OH- anions; and water molecules in combinations determined by their sizes. (C) 2003 MAIK "Nauka/Interperiodica".

引用

页码：44 / 48

页数：5

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