Domain switching and exchange bias control by electric field in the multiferroic conical magnet Mn2GeO4

被引:10
作者
Fischer, J. K. H. [1 ]
Ueda, H. [2 ]
Kimura, T. [1 ]
机构
[1] Univ Tokyo, Dept Adv Mat Sci, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan
[2] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
关键词
Electric field effects - Magnetic field effects - Magnetization - Polarization;
D O I
10.1103/PhysRevB.102.054412
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electric-field effect on magnetism was examined in the multiferroic conical magnet Mn2GeO4, which shows a strong coupling between ferromagnetic and ferroelectric order parameters. The systematic evaluation of the electric polarization in the multiferroic phase below 5.5 K under various field cooling conditions reveals that small magnetic fields of 0.1 T significantly reduce the required electric fields needed to reach saturation. By applying electric fields during magnetic field dependent hysteresis measurements of magnetization M and polarization P an electrically controllable exchange bias was observed, a phenomenon exceedingly rare in single phase multiferroics. Furthermore, nonreversible electric switching of P and M domains was achieved under specific magnetic field conditions.
引用
收藏
页数:6
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