Magnetoelectricity in the system RAl3 (BO3) 4 (R = Tb, Ho, Er, Tm)

K. C. Liang, R. P. Chaudhury, B. Lorenz, Y. Y. Sun, L. N. Bezmaternykh, I. A. Gudim, V. L. Temerov, C. W. Chu

研究成果: Conference article同行評審

41 引文 斯高帕斯(Scopus)


The magnetoelectric effect in the system RAl3(BO 3)4 (R = Tb, Ho, Er, Tm) is investigated between 3 K and room temperature and at magnetic fields up to 70 kOe. We show a systematic increase of the magnetoelectric effect with decreasing magnetic anisotropy of the rare earth moment. A giant magnetoelectric polarization is found in the magnetically (nearly) isotropic HoAl3(BO3)4. The polarization value in transverse field geometry at 70 kOe reaches 3600 μC/m2 which is significantly higher than reported values for the field-induced polarization of linear magnetoelectric or even multiferroic compounds. The results indicate a very strong coupling of the f-moments to the lattice. They further indicate the importance of the field-induced ionic displacements in the unit cell resulting in a polar distortion and a change in symmetry on a microscopic scale. The system RAl3(BO3) 4 could be interesting for the technological utilization of the high-field magnetoelectric effect.

期刊Journal of Physics: Conference Series
發行號PART 3
出版狀態Published - 2012
事件26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
持續時間: 2011 8月 102011 8月 17

All Science Journal Classification (ASJC) codes

  • 一般物理與天文學


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