Magnetoelectric hysteresis loops in Cr2O3 at room temperature

被引：139

作者：

Iyama, Ayato ^{[1
]}

Kimura, Tsuyoshi ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Div Mat Phys, Toyonaka, Osaka 5608531, Japan

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 18期

关键词：

DIELECTRIC-CONSTANT; ORIGIN;

D O I：

10.1103/PhysRevB.87.180408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We revisit the room-temperature linear magnetoelectric effect in Cr2O3 single crystals. It was found that the temperature dependence of dielectric constants in a magnetic field H shows a lambda-shaped peak at the Neel temperature (approximate to 307 K) and that electric polarization induced by applying H is reversed with a hysteresis by sweeping an electric field E. Similar reversal and hysteretic behaviors were also observed in the H dependence of magnetization induced by applying E. These results imply that Cr2O3 behaves as a typical ferroelectric (ferromagnet) in finite H (E) even at room temperature. We discuss the ferroic behaviors observed in the linear magnetoelectric system in the context of recent studies on multiferroics.

引用

页数：4

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