Magnetism of CePt2Sn2

被引：5
|
作者：
Kalvius, GM
Kojima, K
Larkin, M
Luke, GM
Merrin, J
Nachumi, B
Uemura, YJ
Brückel, A
Neumaier, K
Andres, K
Paulsen, C
Nakamoto, G
Takabatake, T
机构：
[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany
[2] Columbia Univ, Dept Phys, New York, NY 10027 USA
[3] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4N1, Canada
[4] Walther Meissner Inst Tieftemp Forsch, D-85747 Garching, Germany
[5] CNRS, CRBT, F-38042 Grenoble, France
[6] Hiroshima Univ, Dept Quantum Matter, Higashihiroshima 7398526, Japan
来源：
PHYSICA B | 2000年 / 281卷
基金：
美国国家科学基金会;
关键词：
heavy fermions; magnetic order; spinglass;
D O I：
10.1016/S0921-4526(99)01203-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
CePt2Sn2 has the tetragonal P4/nmm structure. Polycrystalline (pcr) material possesses in addition a small monoclinic distortion and shows a magnetic transition below 1 K, while no such transition is seen in purely tetragonal single-crystalline (scr) samples. Our mu SR, specific heat and magnetization data are consistent with a spin-glass-like (sgl) state below 0.45 K in scr and long-range order (lro) below 0.85 K in per samples. mu SR demonstrates clearly that the Ce3+ spin ensemble remains dynamic down to lowest temperatures (0.02 K) in the sgl state. but reaches the usual quasi-static limit in the lro state. These results are discussed in terms of geometrical magnetic frustration. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：66 / 68
页数：3
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