Magnetoresistivity properties of some ternary stannides based on cerium and nickel

被引：11
|
作者：
Chevalier, B
Soldevilla, JG
Espeso, JI
Fernández, JR
Sal, JCG
Etourneau, J
机构：
[1] Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France
[2] Univ Cantabria, Fac Ciencias, E-39005 Santander, Spain
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷
关键词：
cerium stannide; magnetoresistivity; Kondo effect;
D O I：
10.1016/S0921-4526(98)00947-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The stannides CeNi(5)Sn (intermediate valence), CeNi(4)Sn(2) (antiferromagnet), CeNiSn(2) (antiferromagnet then ferromagnet) and Ce(2)Ni(2)Sn (Kondo antiferromagnet) were investigated by magnetoresistivity (MR) measurements. Various behaviours were detected: (i) MR is always positive-and weak (congruent to 4.8% at 2 K and 9 T) for CeNi(5)Sn as expected for a non-magnetic metal; (ii) for CeNi(4)Sn(2) the positive MR increases strongly (congruent to 35% at 2 K) below T(N) = 11 K; (iii) a large negative MR is observed at 9 T in the paramagnetic state of Ce(2)Ni(2)Sn (congruent to - 18% at 6 K) and CeNiSn(2) (2 - 7% at 5 K) suggesting the influence of the Kondo effect. (C) 1999 Elsevier Science B.V. All rights reserved.
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收藏
页码：44 / 45
页数：2
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