Crystal structure and optical activity of La3Nb0.5Ga5.5O14 and Sr3Ga2Ge4O14 single crystals of the langasite family

被引：35

作者：

Molchanov, VN ^{[1
]}

Maksimov, BA ^{[1
]}

Kondakov, AF ^{[1
]}

Chernaya, TS ^{[1
]}

Pisarevskii, YV ^{[1
]}

Simonov, VI ^{[1
]}

机构：

[1] Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 117333, Russia

来源：

JETP LETTERS | 2001年 / 74卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1413557

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Precision X-ray structural studies of the La3Nb0.5Ga5.5O14 and Sr3Ga2Ge4O14 single crystals were carried out. The space group P321 was confirmed. The anomalous X-ray scattering was taken into account to establish the absolute structures (chirality) of the crystals; they proved to be of different sign. The structural features responsible for the optical activity of crystals were revealed, and the dependence of the magnitude and sign of specific rotation on the structural parameters of these compounds were determined. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：222 / 225

页数：4

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