Magnetoelectric control of spin-chiral ferroelectric domains in a triangular lattice antiferromagnet

被引:133
作者
Kimura, Kenta [1 ]
Nakamura, Hiroyuki [1 ]
Ohgushi, Kenya [2 ]
Kimura, Tsuyoshi [1 ]
机构
[1] Osaka Univ, Grad Sch Engn Sci, Div Mat Phys, Osaka 5608531, Japan
[2] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
来源
PHYSICAL REVIEW B | 2008年 / 78卷 / 14期
关键词
D O I
10.1103/PhysRevB.78.140401
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have grown single crystals of a triangular lattice antiferromagnet (TLA), CuCrO2, and investigated the correlation between magnetic and dielectric properties. Two magnetic phase transitions are observed at T-N2 approximate to 24.2 K and T-N1 approximate to 23.6 K. It was found that ferroelectric polarization along the triangular lattice plane develops at T-N1, suggesting that the system undergoes a transition into an out-of-plane 120 degrees spin-chiral phase at T-N1. The TLA provides an opportunity for unique magnetoelectric control of spin-chiral ferroelectric domain structures by means of electric and/or magnetic fields.
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页数:4
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