INCOMMENSURABILITIES AND METAMAGNETISM IN THE HEAVY-FERMION ALLOYS (CE0.8LA0.2)RU2SI2 AND CERU2(SI0.9GE0.1)2

被引：34

作者：

MIGNOT, JM

REGNAULT, LP

JACOUD, JL

ROSSATMIGNOD, J

HAEN, P

LEJAY, P

机构：

[1] DRF SPH MDN,CENG,F-38041 GRENOBLE,FRANCE

[2] UNIV JOSEPH FOURIER,CTR RECH TRES BASSES TEMP,CNRS LAB 116X,F-38042 GRENOBLE,FRANCE

来源：

PHYSICA B | 1991年 / 171卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(91)90550-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Long-range magnetic order can be induced in the heavy-fermion compound CeRu2Si2 by slightly expanding the unit-cell volume through alloying (La substituted for Ce, or Ge for Si). The resulting magnetic state has been investigated in (Ce0.8La0.2)Ru2Si2 and CeRu2(Si0.9Ge0.1)2 single crystals by neutron-scattering experiments, as a function of temperature and magnetic field. Very similar phase diagrams, consisting of various regions with either commensurate or incommensurate modulations of the Ce moments, are obtained for both alloys. The second magnetic transition below T(N) that occurs at H = 0 in (Ce0.8La0.2)Ru2Si2 appears to be closely related to the persistence of short-range magnetic fluctuations in the ordered state of this material. It is suggested that the leading effect may be a locking of the phase of the modulation.

引用

页码：357 / 361

页数：5

共 19 条

[11]

LEHMANN P, 1987, THESIS STRASBOURG

[12] MAGNETIC PHASE-DIAGRAM OF GE-SUBSTITUTED CERU2SI2 IN AN APPLIED FIELD [J].

MIGNOT, JM ;

BOUTROUILLE, P ;

REGNAULT, LP ;

HAEN, P ;

LEJAY, P .

SOLID STATE COMMUNICATIONS, 1991, 77 (05) :317-321

[13] NEUTRON-DIFFRACTION STUDY OF (CE,LA)RU2SI2 ALLOYS IN AN EXTERNAL-FIELD [J].

MIGNOT, JM ;

JACOUD, JL ;

REGNAULT, LP ;

ROSSATMIGNOD, J ;

HAEN, P ;

LEJAY, P ;

BOUTROUILLE, P ;

HENNION, B ;

PETITGRAND, D .

PHYSICA B, 1990, 163 (1-3) :611-614

[14]

PFEUTY P, IN PRESS

[15] MAGNETIC-ORDERING IN CEXLA1-XRU2SI2 SOLID-SOLUTIONS [J].

QUEZEL, S ;

BURLET, P ;

JACOUD, JL ;

REGNAULT, LP ;

ROSSATMIGNOD, J ;

VETTIER, C ;

LEJAY, P ;

FLOUQUET, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 76-7 :403-404

[16] NEUTRON-SCATTERING STUDY OF THE HEAVY-FERMION COMPOUND CERU2SI2 [J].

REGNAULT, LP ;

ERKELENS, WAC ;

ROSSATMIGNOD, J ;

LEJAY, P ;

FLOUQUET, J .

PHYSICAL REVIEW B, 1988, 38 (07) :4481-4487

[17] NEUTRON-SCATTERING STUDY OF MAGNETIC FLUCTUATIONS IN CE1-0LA0RU2SI2, CE1-0.2LA0.2RU2SI2 [J].

REGNAULT, LP ;

JACOUD, JL ;

MIGNOT, JM ;

ROSSATMIGNOD, J ;

VETTIER, C ;

LEJAY, P ;

FLOUQUET, J .

PHYSICA B, 1990, 163 (1-3) :606-608

[18]

REGNAULT LP, 1990, IN PRESS 25 P YAM C

[19]

Szytula A., 1989, HDB PHYS CHEM RARE E, P133

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