We have studied the magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4 single crystals by means of capacitance, magnetostriction and Raman spectroscopy measurements. The data reveal strong magnetic field effects on the dielectric constant and on the macroscopic sample length which are associated to long range magnetic ordering and a field-driven metamagnetic transition. We discuss the coupling of the dielectric, structural, and magnetic order parameters and attribute the origin of the magnetodielectric coupling to phonon mode shifts according to the Lyddane-Sachs-Teller (LST) relation.
@article{arxiv.1007.3291,
title = {Magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4},
author = {Umut Adem and Liran Wang and Daniele Fausti and Wolf Schottenhamel and Paul H. M. van Loosdrecht and Alexander Vasiliev and Leonard N. Bezmaternykh and Bernd Büchner and Christian Hess and Rüdiger Klingeler},
journal= {arXiv preprint arXiv:1007.3291},
year = {2015}
}