Low- and high-temperature structures of YbCuBi

被引：5

作者：

Tkachuk, Andriy V.

Mozharivskyj, Yurij

Mar, Arthur ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

[2] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 2006年 / 221卷 / 5-7期

关键词：

phase transition; Bismuth; intermetallics; single crystal structure analysis; X-ray diffraction;

D O I：

10.1524/zkri.2006.221.5-7.539

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A variable temperature single-crystal X-ray diffraction study was undertaken on the intermetallic compound YbCuBi, which undergoes a phase transition at similar to 375 K. At low temperatures (T = 193 K, a = 4.5821(3) angstrom, c = 7.8107(8) angstrom; T = 295 K, a = 4.5825(6) angstrom, c = 7.8597(10) angstrom), YbCuBi adopts the LiGaGe-type (ordered CaIn2-type) structure (Pearson symbol hP6, space group P6(3)MC, Z = 2). At high temperatures (T = 393 K, a = 4.5885(14) angstrom, c = 7.913(2) angstrom; T = 473 K, a = 4.594(4) angstrom, c = 7.928(6) angstrom), YbCuBi adopts the ZrBeSi-type (ordered Ni2In-type) structure (Pearson symbol hP6, space group P6(3)/mmc, Z = 2). The structure consists of Yb atoms separating hexagonal (2)(infinity) [CuBi] nets, which are buckled at low temperatures but planar at high temperatures.

引用

页码：539 / 542

页数：4

共 14 条

[1] ELECTRONIC-STRUCTURE OF TRANSITION-METAL BORIDES WITH THE ALB2 STRUCTURE [J].