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Abstract: We have studied the magnetodielectric and magnetoelastic coupling inTbFe3BO34 single crystals by means of capacitance, magnetostriction and Ramanspectroscopy measurements. The data reveal strong magnetic field effects on thedielectric constant and on the macroscopic sample length which are associatedto long range magnetic ordering and a field-driven metamagnetic transition. Wediscuss the coupling of the dielectric, structural, and magnetic orderparameters and attribute the origin of the magnetodielectric coupling to phononmode shifts according to the Lyddane-Sachs-Teller LST relation.



Autor: Umut Adem, Liran Wang, Daniele Fausti, Wolf Schottenhamel, Paul H.M. van Loosdrecht, Alexander Vasiliev, Leonard N. Bezmaternykh,

Fuente: https://arxiv.org/







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