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
收藏
页码：539 / 542
页数：4
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