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Updated: Nov 8, 2025
07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
9.0K
Ferroelectricity and multiferroicity in anti-Ruddlesden-Popper structures
Maxime Markov1, Louis Alaerts1,2, Henrique Pereira Coutada Miranda1
1Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium.
Summary
Researchers discovered new hyperferroelectric materials with potential for combined magnetic and electric properties. These novel anti-Ruddlesden-Popper phases offer exciting possibilities for advanced materials science.
Area of Science:
- Materials Science
- Solid State Physics
- Crystallography
Background:
- Developing new ferroelectric materials is crucial for combining ferroelectricity with other properties like magnetism.
- Existing ferroelectric material families have limitations in achieving multifunctional properties.
Purpose of the Study:
- To identify novel ferroelectric materials with potential for multifunctional applications.
- To explore new structural families exhibiting ferroelectric and antiferroelectric behaviors.
Main Methods:
- High-throughput analysis of phonon band structures.
- Identification of anti-Ruddlesden-Popper phases with the general formula [Formula: see text]O.
- Investigation of polar distortion mechanisms driven by chemical strain.
Main Results:
- Discovery of a new family of anti-Ruddlesden-Popper phases exhibiting ferroelectric and antiferroelectric properties.
- Identification of hyperferroelectrics that polarize under open-circuit conditions.
- Observation of coupled ferromagnetic and ferroelectric order at the same atomic site in [Formula: see text]O.
Conclusions:
- The identified anti-Ruddlesden-Popper phases represent a new class of ferroelectric materials.
- These materials, particularly [Formula: see text]O, show promise for applications requiring coupled magnetic and electric functionalities.
- Geometric effects and internal chemical strains are key drivers for ferroelectricity in this structural family.
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