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Updated: Jun 3, 2026
07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Polarization and magnetization dynamics of a field-driven multiferroic structure.
Alexander Sukhov1, Chenglong Jia, Paul P Horley
1Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06120 Halle, Germany.
Summary
This study explores multiferroic chains, showing that electric and magnetic fields can control polarization and magnetization in materials like BaTiO(3)/Fe. This highlights potential for tunable multiferroic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Multiferroics
Background:
- Multiferroic materials exhibit coupled ferroelectric and magnetic orders.
- Interface effects, such as electrostatic screening, can induce or enhance magnetoelectric coupling.
- Understanding dynamic responses is crucial for device applications.
Purpose of the Study:
- To theoretically investigate the dynamic ferroelectric and magnetic response of a multiferroic chain with interface-induced linear magnetoelectric coupling.
- To explore the controllability of polarization and magnetization by external fields.
- To validate theoretical models with computational methods.
Main Methods:
- Coupled Landau-Khalatnikov and finite-temperature Landau-Lifshitz-Gilbert equations for dynamic response.
- Theoretical modeling of a multiferroic chain with ferroelectric/ferromagnet interface.
- Comparison with Monte Carlo simulations for validation.
Main Results:
- Demonstrated control of polarization using external electric fields.
- Demonstrated control of magnetization using external magnetic fields.
- Confirmed these effects for material parameters of BaTiO(3)/Fe.
Conclusions:
- The studied multiferroic chain exhibits tunable polarization and magnetization via external fields.
- Interface electrostatic screening plays a key role in the observed magnetoelectric coupling.
- The findings support the potential for developing novel multiferroic devices with field-tunable properties.
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