ELECTRIC POLARIZATION;
SINGLE-CRYSTALS;
MULTIFERROICS;
D O I:
10.1103/PhysRevB.83.180417
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
A giant magnetoelectric polarization is found in HoAl3(BO3)(4). The polarization in transverse field geometry at 70 kOe reaches 3600 mu C/m(2), which is significantly higher than reported values of linear magnetoelectric or even multiferroic compounds. The magnetostrictive effect is also measured and compared with the magnetoelectricity. The results show that spin-lattice coupling in HoAl3(BO3)(4) is extremely strong and that the magnetic field causes a large polar distortion of the ionic positions in the unit cell.