Magnetoelectric coupling in the cubic ferrimagnet
- 17 September 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 78 (9), 094416
- https://doi.org/10.1103/physrevb.78.094416
Abstract
We have investigated the magnetoelectric coupling in the lone pair containing piezoelectric ferrimagnet . Significant magnetocapacitance develops in the magnetically ordered state . We find critical behavior near and a divergence near the metamagnetic transition at 500 Oe. High-resolution x-ray and neutron powder diffraction measurements show that is metrically cubic down to 10 K but that the ferrimagnetic ordering reduces the symmetry to rhombohedral . The metric cubic lattice dimensions exclude a magnetoelectric coupling mechanism involving spontaneous lattice strain, and this is unique among magnetoelectric and multiferroic materials.
Keywords
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