Magnetodielectric coupling in a non-perovskite metal–organic framework

Magnetodielectric coupling in Mn3O4

We have investigated the dielectric anomalies associated with spin-ordering transitions in the tetragonal spinel Mn3O4 using thermodynamic, magnetic, and dielectric measurements. We find that two of the three magnetic ordering transitions in Mn3O4 lead to decreases in the temperature-dependent dielectric constant at zero applied field. Applying a magnetic field to the polycrystalline sample lea...

Magnetodielectric and magnetoelastic coupling in TbFe3(BO3)4

Magnetodielectric coupling of infrared phonons in single-crystal Cu2OSeO3

K. H. Miller,1 X. S. Xu.,2 H. Berger,3 E. S. Knowles,1 D. J. Arenas,1,4 M. W. Meisel,1 and D. B. Tanner1 1Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Institute of Physics of Complex Matter, Ecole Polytechnique Federal de Lausanne, CH-1015 Lausanne, S...

Magnetodielectric coupling in nonmagnetic Au/GaAs:Si Schottky barriers

S. Tongay,1 A. F. Hebard,1,* Y. Hikita,2 and H. Y. Hwang2,3 1Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA 2Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan 3Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan Received 2 June 2009; revised manuscript received 28 August 2009; published 24 Novemb...

Temperature and frequency dependent giant magnetodielectric coupling in DyMn0.33Fe0.67O3

Perovskite DyMn0.33Fe0.67O3 experiences a paramagnetism-antiferromagnetism transition at 450K and spin reorientation at 290 K. Magnetodielectric properties were studied around the spin reorientation transition. Both giant positive and giant negative magnetodielectric coupling (MDC) were observed near room temperature. The MDC shows strong temperature and frequency dependence, and the sign chang...