Antiferro-quadrupolar structures in UPd3 inferred from x-ray resonant Bragg diffraction

A systematic analysis of resonant x-ray Bragg diffraction data for UPd(3), with signal enhancement at the U M(IV) edge, including possible structural phase transitions leads to a new determination of the space groups of the material in the phases between T(0)=7.8 K and T(+1)=6.9 K, as P 222(1), and...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 22; no. 2; pp. 022202 - 022202 (6)
Main Authors Fernández-Rodríguez, Javier, Lovesey, Stephen W, Blanco, Jesús A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 20.01.2010
Institute of Physics
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Physics
Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
Palladium base alloys
Hexagonal lattices
Structure factors
Bragg diffraction
Quadrupole interactions
Uranium alloys
Order parameters
Antiferroquadripolar order
XRD
Online AccessGet full text

Cover

More Information
Summary:A systematic analysis of resonant x-ray Bragg diffraction data for UPd(3), with signal enhancement at the U M(IV) edge, including possible structural phase transitions leads to a new determination of the space groups of the material in the phases between T(0)=7.8 K and T(+1)=6.9 K, as P 222(1), and between T(-1)=6.7 K and T(2)=4.4 K, as P2(1). In addition, the quadrupolar order parameters, {Q(ab)}, inferred from diffraction data for the phase between T(-1) and T(2), are {Q(xz)} and {Q(yz)} at the (103) Bragg reflection and {Q(xy)} at the (104) reflection.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/22/2/022202