Tuning ferroelectric polarization reversal by electric and magnetic fields in CuCrO(2).
Tuning ferroelectric polarization reversal by electric and magnetic fields in CuCrO(2).
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DOI：
10.1103/physrevlett.103.107201
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发表时间：
2009-09
影响因子：
8.6
通讯作者：
K. Kimura;H. Nakamura;S. Kimura;M. Hagiwara;T. Kimura
中科院分区：
文献类型：
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作者：
K. Kimura;H. Nakamura;S. Kimura;M. Hagiwara;T. Kimura
研究了电场和磁场对具有磁致铁电序的三角形晶格反铁磁体CuCrO(2)的磁性和电学性质的影响。我们证明了在三角形晶格反铁磁体中使用磁场和电场可以很好地调谐铁电极化反转。观察到的磁电可调性可归因于小的面内自旋各向异性和由此产生的铁电极化方向的高度自由，这是具有面外120度自旋结构的多铁三角形晶格反铁磁体的特征。
The effects of electric and magnetic fields on magnetic and electric properties have been investigated for a triangular lattice antiferromagnet CuCrO(2) showing magnetically induced ferroelectric order. We demonstrate that ferroelectric polarization reversal can be finely tuned by using both magnetic and electric fields in the triangular lattice antiferromagnet. The observed magnetoelectric tunability can be attributed to small in-plane spin anisotropy and a resultant high degree of freedom for the direction of ferroelectric polarization, which is characteristic of a multiferroic triangular lattice antiferromagnet with out-of-plane 120 degrees spin structure.