Magnetoelectricity and Magnetostriction due to the Rare Earth Moment in TmAl$ 3$BO$ 3$$ 4$ - Condensed Matter > Strongly Correlated ElectronsReport as inadecuate




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Abstract: The magnetic properties, the magnetostriction, and the magnetoelectric effectin the d-electron free rare-earth aluminum borate TmAl$ 3$BO$ 3$$ 4$ areinvestigated between room temperature and 2 K. The magnetic susceptibilityreveals a strong anisotropy with the hexagonal c-axis as the hard magneticaxis. Magnetostriction measurements show a large effect of an in-plane fieldreducing both, the a- and c-axis lattice parameters. The magnetoelectricpolarization change in a- and c-directions reaches up to 300 $\mu$C-m$^2$ at 70kOe with the field applied along the a-axis. The magnetoelectric polarizationis proportional to the lattice contraction in magnetic field. The results ofthis investigation prove the existence of a significant coupling between therare earth magnetic moment and the lattice in $R$Al$ 3$BO$ 3$$ 4$ compounds$R$ = rare earth. They further show that the rare earth moment itself willgenerate a large magnetoelectric effect which makes it easier to study and tounderstand the origin of the magnetoelectric interaction in this class ofmaterials.



Author: R. P. Chaudhury, B. Lorenz, Y. Y. Sun, L. N. Bezmaternykh, V. L. Temerov, C. W. Chu

Source: https://arxiv.org/







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