COEXISTENCE OF ANTIFERROMAGNETIC FLUCTUATIONS AND ORDERING IN (CE, LA)RU2SI2

被引：14
|
作者：
HAEN, P [1 ]
VOIRON, J [1 ]
LAPIERRE, F [1 ]
FLOUQUET, J [1 ]
LEJAY, P [1 ]
机构：
[1] UNIV JOSEPH FOURIER,CNRS,LAB L NEEL,F-38042 GRENOBLE,FRANCE
来源：
PHYSICA B | 1990年 / 163卷 / 1-3期
关键词：
D O I：
10.1016/0921-4526(90)90257-U
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The occurrence of a metamagnetic like transition below ≈15-8 K in the magnetization (M) of Ce1-xLaxRu2Si2 single crystals for H parallel to the easy tetragonal c-axis (maximum in ∂M/∂H at a field HM) is reported. This transition exists in both non-ordered (x = 0 and 0.05) and antiferromagnetically ordered (x = 0.1 and 0.13) materials. In the latter, the maximum in ∂M/∂H persists even below TN while two additional peaks grow at fields Ha and Hc (Ha < H c < HM) corresponding to steps in M (changes in the magnetic structure). The persistence of HM > Hc is ascribed to coexistence of magnetic fluctuations (similar to those observed for x = 0) and long range ordering below TN. © 1990.
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页码：519 / 521
页数：3
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