Substantial magnetoelectric coupling near room temperature in Bi2Fe4O9

被引：138

作者：

Singh, A. K. ^{[1
]}

Kaushik, S. D. ^{[1
]}

Kumar, Brijesh ^{[1
]}

Mishra, P. K. ^{[2
]}

Venimadhav, A. ^{[3
]}

Siruguri, V. ^{[4
]}

Patnaik, S. ^{[1
]}

机构：

[1] Jawaharlal Nehru Univ, Sch Phys Sci, New Delhi 110067, India

[2] Bhabha Atom Res Ctr, Tech Phys & Prototype Engn Div, Bombay 400085, Maharashtra, India

[3] Indian Inst Technol, Cryogen Engn Ctr, Kharagpur 721302, W Bengal, India

[4] Bhabha Atom Res Ctr, UGC DAE Consortium Sci Res Mumbai Ctr, Bombay 400085, Maharashtra, India

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 13期

关键词：

Antiferromagnetism - Magnetoelectric effects - Polycrystalline materials - X ray diffraction;

D O I：

10.1063/1.2905815

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report remarkable multiferroic effects in polycrystalline Bi2Fe4O9. High-resolution x-ray diffraction shows that this compound has orthorhombic structure. Magnetic measurements confirm an antiferromagnetic transition around 260 K. A pronounced inverse S-shape anomaly in the loss tangent of dielectric measurement is observed near the Neel temperature. This feature shifts with the application of magnetic field. These anomalies are indicative of substantial coupling between the electric and magnetic orders in this compound.

引用

页数：3

共 22 条

[1] Multiferroics: a magnetic twist for ferroelectricity [J].