Magnetic, transport and thermal behaviour of R3Si2, R2YSi2 (R=La and Ce), Ce2ScSi2 and Ce2Sc3Si4

被引：13
|
作者：
Dhar, SK
Manfrinetti, P
Palenzona, A
Kimura, Y
Kozaki, M
Onuki, Y
Takeuchi, T
机构：
[1] Tata Inst Fundamental Res, Condensed Matter Grp, Bombay 400005, Maharashtra, India
[2] Univ Genoa, INFM, Sezione Chim Fis, I-16146 Genoa, Italy
[3] Univ Genoa, Sezione Chim Fis, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy
[4] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 560, Japan
[5] Osaka Univ, Low Temp Ctr, Toyonaka, Osaka 560, Japan
来源：
PHYSICA B | 1999年 / 271卷 / 1-4期
关键词：
Ce-Sc-Si compounds; Ce3Si2; La3Si2; magnetic ordering; superconductivity;
D O I：
10.1016/S0921-4526(99)00203-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have studied the magnetic properties of Ce3Si2, Ce2YSi2, Ce2ScSi2 and Ce2Sc3Si4. Non-magnetic analogues La3Si2 and La2YSi2 were also studied. All the four cerium compounds are antiferromagnetic at low temperatures. Ce2Si2 orders near 8.5 K and the transition temperature is lower in isostructural Ce2YSi2 and Ce2ScSi2. A magnetic transition near 5.6 K is observed in Ce2Sc3Si4. Heat capacity and resistivity data indicate appreciable short-range order and/or a residual Kondo interaction in these cerium based compounds. A superconducting transition in La,Si, occurs near 2.1 K, while isostructural La2YSi2 shows normal metallic behaviour down to at least 1.6 K. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：150 / 157
页数：8
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