Crystal structure and microtwinning of monoclinic La3SbZn3Ge2O14 crystals of the langasite family

被引：0

作者：

B. A. Maksimov

S. S. Kazantsev

V. N. Molchanov

I. A. Verin

B. V. Mill

机构：

[1] Russian Academy of Sciences,Shubnikov Institute of Crystallography

[2] Moscow State University,Faculty of Physics

来源：

Crystallography Reports | 2004年 / 49卷

关键词：

Crystal Structure; Diffraction Analysis; Rotation Axis; Polysynthetic Twin; Langasite Family;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The crystal structure of monoclinic La3SbZn3Ge2O14 crystals from the langasite family is determined by X-ray diffraction analysis [a = 5.202(1) Å, b = 8.312(1) Å, c = 14.394(2) Å, β = 90.02(1)°, sp. gr. A2, Z = 2, and R/Rw = (5.2/4.6)%]. The structure is a derivative of the Ca3Ga2Ge4O14-type structure (a = 8.069 Å, c = 4.967 Å, sp. gr. P321, Z = 1). The crystal studied is a polysynthetic twin with the twin index n = 2, whose monoclinic components are related by pseudomerohedry by a threefold rotation axis of the supergroup P321.

引用

页码：585 / 590

页数：5

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