X-ray resonant diffraction study of multiferroic DyMn2O5

被引：29

作者：

Ewings, R. A. ^{[1
]}

Boothroyd, A. T. ^{[1
]}

McMorrow, D. F. ^{[2
,3
]}

Mannix, D. ^{[4
]}

Walker, H. C. ^{[2
,3
]}

Wanklyn, B. M. R. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[2] UCL, London Ctr Nanotechnol, London WC1E 6BT, England

[3] UCL, Dept Phys & Astron, London WC1E 6BT, England

[4] European Synchrotron Radiat Facil, XMaS CRG Beamline, F-38043 Grenoble, France

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevB.77.104415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray resonant scattering has been used to measure the magnetic order of the Dy ions below 40 K in multiferroic DyMn2O5. The magnetic order has a complex behavior. There are several different ordering wave vectors, both incommensurate and commensurate, as the temperature is varied. In addition a nonmagnetic signal at twice the wave vector of one of the commensurate signals is observed, the maximum intensity of which occurs at the same temperature as a local maximum in the ferroelectric polarization. Some of the results, which bear resemblance to the behavior of other members of the RMn2O5 family of multiferroic materials, may be explained by a theory based on so-called acentric spin-density waves.

引用

页数：7

共 30 条

[1]

ALSHIN BI, 1963, SOV PHYS JETP-USSR, V17, P809

[2] MAGNETOELECTRICITY IN THEORY AND EXPERIMENT [J].