Quadrupolar and magnetic transitions in UPd3

被引：33

作者：

McEwen, KA

Steigenberger, U

Clausen, KN

Kulda, J

Park, JG

Walker, MB

机构：

[1] Univ London Birkbeck Coll, Dept Phys, London WC1E 7HX, England

[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[3] Riso Natl Lab, DK-4000 Roskilde, Denmark

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 09, France

[5] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

基金：

英国工程与自然科学研究理事会;

关键词：

quadrupolar structures; magnetic structures; phase transitions;

D O I：

10.1016/S0304-8853(97)00993-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

UPd(3) exhibits phase transitions at T(1) = 6.8 K and T(2) = 4.4 K, corresponding to antiferroquadrupolar and magnetic ordering. We have now confirmed a third transition at T(0) = 7.8 K, where quadrupolar order first develops. The phase diagram for a magnetic field along the a-direction has been examined by neutron-diffraction studies, using both polarised and unpolarised neutrons. In zero magnetic field, the intensities of the superlattice reflections due to the antiferroquadrupolar order are extremely weak. They increase rapidly in a magnetic field, and the underlying quadrupolar structure has been deduced from the induced magnetic structure. This method may be used to elucidate the quadrupolar structures of other systems. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：37 / 40

页数：4

共 17 条

[1] ANOMALOUS BEHAVIOR IN LOW-TEMPERATURE PROPERTIES OF UPD3 [J].

ANDRES, K ;

DAVIDOV, D ;

DERNIER, P ;

HSU, F ;

REED, WA ;

NIEUWENHUYS, GJ .

SOLID STATE COMMUNICATIONS, 1978, 28 (05) :405-408

[2] Neutron intermultiplet spectroscopy of UPd3 and UPt3 [J].

Bull, MJ ;

McEwen, KA ;

Osborn, R ;

Eccleston, RS .

PHYSICA B-CONDENSED MATTER, 1996, 223-24 (1-4) :175-177

[3]

BULL MJ, 1998, IN PRESS PHYS REV B

[4]

BUYERS WJL, 1985, HDB PHYSICS CHEM ACT, V2, P239

[5] QUADRUPOLAR KONDO EFFECT IN URANIUM HEAVY-ELECTRON MATERIALS [J].

COX, DL .

PHYSICAL REVIEW LETTERS, 1987, 59 (11) :1240-1243

[6] NEUTRON-SCATTERING STUDIES OF Y1-XUXPD3 COMPOUNDS [J].

DAI, P ;

MOOK, HA ;

SEAMAN, CL ;

MAPLE, MB ;

KOSTER, JP .

PHYSICAL REVIEW LETTERS, 1995, 75 (06) :1202-1205

[7]

Jensen J., 1991, Rare Earth Magnetism: Structures and Excitations

[8] Neutron scattering studies of UxY1-xPd3 compounds [J].

McEwen, K. A. ;

Bull, M. J. ;

Eccleston, R. S. ;

Hinks, D. ;

Bradshaw, A. R. .

PHYSICA B-CONDENSED MATTER, 1995, 206 :112-115

[9] MAGNETIC EXCITATIONS AND PHASE-TRANSITIONS IN UPD3 [J].

MCEWEN, KA ;

STEIGENBERGER, U ;

MARTINEZ, JL .

PHYSICA B-CONDENSED MATTER, 1993, 186-88 :670-674

[10] MAGNETIC-SUSCEPTIBILITY OF SINGLE-CRYSTAL UPD3 [J].

MCEWEN, KA ;

ELLERBY, M ;

DEPODESTA, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 :1411-1412

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