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Updated: Aug 26, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Field-induced reentrant novel phase and a ferroelectric-magnetic order coupling in HoMnO3
B Lorenz1, A P Litvinchuk, M M Gospodinov
1Department of Physics and TCSAM, University of Houston, Houston, Texas 77204-5002, USA.
Abstract:
A reentrant novel phase is observed in the hexagonal ferroelectric HoMnO3 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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