Field-Induced Reentrant Novel Phase and a Ferroelectric-Magnetic Order Coupling in
- 26 February 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (8) , 087204
- https://doi.org/10.1103/physrevlett.92.087204
Abstract
A reentrant novel phase is observed in the hexagonal ferroelectric in the presence of magnetic fields in the temperature range defined by a plateau of the dielectric constant anomaly. The plateau evolves with fields from a narrow dielectric peak at the Mn-spin rotation transition at 32.8 K in zero field. The anomaly appears both as a function of temperature and as a function of magnetic field without detectable hysteresis. This is attributed to the indirect coupling between the ferroelectric (FE) and antiferromagnetic (AFM) orders, arising from an FE-AFM domain wall effect.
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