Magnetic phase diagram of the colossal magnetoelectric DyMn2O5 -: art. no. 060407

被引：79

作者：

Ratcliff, W ^{[1
]}

Kiryukhin, V

Kenzelmann, M

Lee, SH

Erwin, R

Schefer, J

Hur, N

Park, S

Cheong, SW

机构：

[1] NIST, Ctr Neurtron Res, Gaithersburg, MD 20899 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[4] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

[5] ETHZ, Lab Neutron Scattering, CH-5232 Villigen, Switzerland

[6] PSI, Villigen, Switzerland

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.72.060407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report neutron-diffraction measurements of the magnetic phase diagram of the colossal magnetoelectric DyMn2O5. Our measurements reveal the magnetic origin of the complex dielectric anomalies in this material. Frustrated magnetic interactions result in a large density of low-energy magnetic states which can be selected by the application of relatively small magnetic fields. The unusual combination of magnetic frustration and strong magnetoelastic coupling is responsible for the remarkable changes of the dielectric properties of DyMn2O5 in small applied magnetic fields.

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