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
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.
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收藏
页数:4
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