Multiferroic phases of Eu1-xYxMnO3

被引：181

作者：

Hemberger, J. ^{[1
]}

Schrettle, F.

Pimenov, A.

Lunkenheimer, P.

Ivanov, V. Yu.

Mukhin, A. A.

Balbashov, A. M.

Loidl, A.

机构：

[1] Univ Augsburg, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany

[2] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia

[3] Moscow Power Res Inst, Moscow 111250, Russia

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.75.035118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on structural, magnetic, dielectric, and thermodynamic properties of Eu1-xYxMnO3 for Y doping levels 0 <= x < 1. This system resembles the multiferroic perovskite manganites RMnO3 (with R=Gd,Dy,Tb) but without the interference of magnetic contributions of the 4f ions. In addition, it offers the possibility to continuously tune the influence of the A-site ionic radii. For small concentrations x <= 0.1 we find a canted antiferromagnetic and paraelectric ground state. For higher concentrations x >= 0.3 ferroelectric polarization coexists with the features of a presumably spiral magnetic phase analogous to the observations in TbMnO3. In the intermediate concentration range around x approximate to 0.2 a multiferroic scenario is realized combining weak ferroelectricity and weak ferromagnetism, presumably due to a conelike magnetic structure.

引用

页数：8

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