Domain switching and exchange bias control by electric field in the multiferroic conical magnet Mn2GeO4
Domain switching and exchange bias control by electric field in the multiferroic conical magnet Mn2GeO4
复制标题
多铁圆锥形磁体Mn2GeO4的畴切换和电场控制交换偏置
DOI：
10.1103/physrevb.102.054412
复制
发表时间：
2020-06
影响因子：
3.7
通讯作者：
J. Fischer;H. Ueda;T. Kimura
中科院分区：
文献类型：
--
作者：
J. Fischer;H. Ueda;T. Kimura
在锥形螺旋多铁质Mn${}_{2}$GeO${}_{4}$中，铁磁性和铁电性耦合异常强烈。在这项工作中，作者利用这一事实来控制磁场。在磁场扫描过程中施加大的正或负电场（~1.0 MV/m）会触发磁化和极化滞后中的可控交换偏置。有趣的是，改变电场的极性也能够改变极化和磁化畴的方向。
Ferromagnetism and ferroelectricity are exceptionally strongly coupled in the conical-spiral multiferroic Mn${}_{2}$GeO${}_{4}$. In this work, the authors take advantage of this fact to control the magnetism by electric fields. Applying large positive or negative electric fields (~1.0 MV/m) during the magnetic field sweeping triggers an electrically controllable exchange bias in both the magnetization and polarization hystereses. Intriguingly, switching the polarity of the electric field is also capable of reorienting the polarization and magnetization domains.