Commensurate Dy magnetic ordering associated with incommensurate lattice distortion in multiferroic DyMnO3

被引：71

作者：

Feyerherm, R. ^{[1
]}

Dudzik, E.

Aliouane, N.

Argyriou, D. N.

机构：

[1] CO Bessy, HMI, D-12489 Berlin, Germany

[2] HMI, D-14109 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.73.180401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Synchrotron x-ray diffraction and resonant magnetic scattering experiments on a single crystal of orthorhombic DyMnO3 have been carried out between 4 and 40 K. Below T-N(Dy)=5 K, the Dy magnetic moments order in a commensurate structure with propagation vector 0.5 b(*). Simultaneous with the Dy magnetic ordering, an incommensurate lattice modulation with propagation vector 0.905 b(*) evolves while the original Mn induced modulation is suppressed and shifts from 0.78 b(*) to 0.81 b(*). This points to a strong interference of Mn and Dy induced structural distortions in DyMnO3 besides a magnetic coupling between the Mn and Dy magnetic moments.

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页数：4

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