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arXiv · 1105.3429

Giant Magnetoelectric Effect in HoAl_3(BO_3)_4

K. -C. Liang·R. P. Chaudhury·B. Lorenz·Y. Y. Sun·L. N. Bezmaternykh·V. L. Temerov·C. W. Chu
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Abstract

A giant magnetoelectric polarization is found in HoAl$_3$(BO$_3$)$_4$. The polarization in transverse field geometry at 70 kOe reaches 3600 $μC/m^2$ 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 HoAl$_3$(BO$_3$)$_4$ is extremely strong and that the magnetic field causes a large polar distortion of the ionic positions in the unit cell.

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K. -C. Liang, R. P. Chaudhury, B. Lorenz, Y. Y. Sun, L. N. Bezmaternykh, V. L. Temerov, C. W. Chu. 2011-05-17. Giant Magnetoelectric Effect in HoAl_3(BO_3)_4. https://doi.org/10.1103/physrevb.83.180417

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