Magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4

Details Magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4 Magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4

2010-07-19

arxiv.org/abs/1007.3291v1

Physics

Condensed Matter

Materials Science

Accepted for publication in Physical Review B

Scientific paper

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.

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