...
首页> 外文期刊>Crystallography reports >Accurate structural study of langasite-family Ca3TaGa3Si2O14 crystal
【24h】

Accurate structural study of langasite-family Ca3TaGa3Si2O14 crystal

机译:兰加石族Ca3TaGa3Si2O14晶体的精确结构研究

获取原文
获取原文并翻译 | 示例
           

摘要

An accurate X-ray diffraction study of Ca3TaGa3Si2O14 single crystal has been performed using two datasets obtained on a diffractometer equipped with a CCD area detector (a = 8.1056(2) , c = 4.9800(1) , sp. gr. P321, Z = 1, R/wR = 0.486/0.488%). A model structure is determined which is characterized by a high degree of reproducibility of structural parameters. Each site in Ca3TaGa3Si2O14 is occupied by atoms of only one type. Nevertheless, its structural feature is asymmetric disordering of sites of Ca, Ta, Ga, and two out of three oxygen atoms occupying special and general sites. A transition of some part of Ca atoms (similar to 3%) from 3e sites on the twofold symmetry axis to general 6g sites is revealed.
机译:使用配备有CCD面积检测器的衍射仪获得的两个数据集(a = 8.1056(2),c = 4.9800(1),sp。gr。P321,Z = 1,R / wR = 0.486 / 0.488%)。确定模型结构,其特征在于结构参数的高度可重复性。 Ca 3 TaGa 3 Si 2 O 14中的每个位点仅被一种类型的原子占据。然而,其结构特征是Ca,Ta,Ga的位点不对称无序,并且三个氧原子中的两个占据了特殊位点和一般位点。揭示了Ca原子的某些部分(约3%)从双重对称轴上的3e位点过渡到一般的6g位点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号