THE CRYSTAL-STRUCTURE OF BITEL

被引：9

作者：

KERAMIDAS, KG ^{[1
]}

VOUTSAS, GP ^{[1
]}

PAPAZOGLOU, A ^{[1
]}

RENTZEPERIS, PI ^{[1
]}

机构：

[1] ARISTOTELIAN UNIV SALONIKA,APPL PHYS LAB,SALONIKA,GREECE

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1993年 / 204卷

关键词：

CRYSTAL STRUCTURE; FERROELECTRIC SUBJECT CLASSIFICATION 61.60;

D O I：

10.1524/zkri.1993.204.Part-1.89

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The crystal structure of BiTeI has been redetermined with 1924 independent reflections, using three-dimensional intensities measured on a computer controlled Philips PW 1100 single crystal diffractometer. The structure belongs to the rhombohedral space group P3 and the cell constants, obtained by least-squares calculation from direct theta-value measurements on the diffractometer, are a = 4.336 and c = 6.84 angstrom and do not considerably deviate from those mentioned in the literature. The positional and thermal parameters, with anisotropic temperature factors, were refined by full-matrix least-squares calculations to a final R 0.0745. Each Bi atom is six-coordinated by three Te and three I atoms at distances 3.88(5) angstrom and 3.05(2) angstrom respectively thus forming a distorted octahedron. The faces of the octahedron are two equilateral triangles (Te-Te-Te, I-I-I) with sides 4.336 angstrom and six isosceles triangles (three I-Te-I and three Te-I-Te) with sides I-Te 3.29(3) angstrom and I-I or Te-Te 4.336 angstrom. The octahedra are linked to each other by a common Te-I edge along the a and b axes in infinite layers.

引用

页码：89 / 94

页数：6

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