Magnetic structures of RPd2Ge (R = Tb-Er) compounds

被引：2
|
作者：
Kolenda, M
Balanda, M
Hofmann, M
Penc, B
Szytula, A [1 ]
机构：
[1] Jagiellonian Univ, Inst Phys, Reymonta 4, PL-30059 Krakow, Poland
[2] Inst Nucl Phys, PL-31342 Krakow, Poland
[3] BENSC, Hahn Meitner Inst, D-14109 Berlin, Germany
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2002年 / 74卷 / Suppl 1期
关键词：
D O I：
10.1007/s003390201583
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Crystal and magnetic structures of RPd2Ge (R = Tb - Er) compounds are determined on the basis of neutron-diffraction data. They crystallize in the orthorhombic Fe3C-type structure (space group Pnma). All the compounds are antiferromagnets. The Neel temperatures are 19 K, 13.5 K, 4.4 K and 3 K for the compounds with Tb, Dy, Ho and Er, respectively. TbPd2Ge and DyPd2Ge undergo a further phase transition in the ordered state and at 1.5 K they exhibit a collinear magnetic structure described by the propagation vector k = (0, 0, 1/2). With increasing temperature the structure changes into a sine-wave-modulated one (at 10 K and 5.5 K for R = Tb and Dy, respectively). HoPd2Ge has a sine-wave-modulated structure and ErPd2Ge is a collinear antiferromagnet at 1.5 K. In both cases the magnetic moments are parallel to the c axis.
引用
收藏
页码：S775 / S777
页数：3
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