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Updated: May 9, 2026
07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Molecule-displacive ferroelectricity in organic supramolecular solids
Heng-Yun Ye1, Yi Zhang, Shin-ichiro Noro
1Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan.
Scientific Reports
|July 23, 2013
Summary
New organic ferroelectrics based on supramolecular adducts exhibit excellent performance for potential use in organic ferroelectric memory (FeRAM) devices, overcoming previous limitations.
Area of Science:
- Materials Science
- Organic Electronics
- Solid-State Physics
Background:
- Ferroelectricity is crucial for sensors, actuators, and memory devices.
- Organic ferroelectrics offer potential for next-generation organic electronics.
- Existing organic ferroelectrics face challenges like current leakage and low operating frequencies, hindering applications like ferroelectric memory (FeRAM).
Purpose of the Study:
- To investigate the ferroelectric properties of supramolecular adducts of tartaric acid and 1,4-diazabicyclo[2.2.2]octane N,N'-dioxide.
- To address the limitations of current organic ferroelectrics for practical applications, particularly in FeRAM.
Main Methods:
- Synthesis and characterization of supramolecular adducts.
- Measurement of ferroelectric hysteresis loops at various frequencies.
- Evaluation of polarization switching endurance.
Main Results:
- The supramolecular adducts exhibit molecule-displacive ferroelectricity.
- Demonstrated large spontaneous polarization and high rectangularity in ferroelectric hysteresis loops.
- Achieved high performance in polarization switching (up to 1 × 10⁶ cycles) without fatigue, even at 10 kHz operation frequency.
Conclusions:
- These novel organic ferroelectrics overcome key limitations of previous materials.
- The demonstrated properties open significant application prospects, especially for organic FeRAM.
- Supramolecular engineering provides a promising route to advanced organic electronic materials.
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