MAGNETO-VOLUME EFFECTS IN SOME SELECTED HEAVY-FERMION COMPOUNDS

被引:41
作者
DEVISSER, A [1 ]
FRANSE, JJM [1 ]
FLOUQUET, J [1 ]
机构
[1] CTR RECH TRES BASSES TEMP,CNRS,F-38042 GRENOBLE,FRANCE
来源
PHYSICA B | 1989年 / 161卷 / 1-3期
关键词
D O I
10.1016/0921-4526(89)90156-7
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We present a review of recent magneto-volume experiments, such as thermal expansion and magnetostriction, performed on good-quality single crystals of heavy-fermion systems, like CeCu6, CeRu2Si2, URu2Si2, UBe13 and UPt3. All investigated compounds exhibit large magneto-volume effects at low temperatures, as is reflected by their huge Grüneisen parameters (at least two orders of magnitude larger than in ordinary metals). A combination of specific-heat and thermal-expansion data yields furthermore information on the pressure dependence of the characteristic temperatures, and allows, in particular cases, for a detailed separation of the Kondo, crystal-field, phonon or other contributions to the thermal properties. We also discuss the magneto-volume effect connected with the metamagnetic-like transitions observed at 20 and 8 T (at 4.2K) for UPt3 and CeRu2Si2, respectively. © 1989.
引用
收藏
页码:324 / 332
页数:9
相关论文
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