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Metal-organic molecule-based materials as potential ferroelectrics

Principal investigator

Project type
Znanstveno-istraživački projekti
Programme
Installation Research Projects
Financier
Croatian Science Foundation
Start date
May 10th 2020
End date
May 9th 2025
Status
Active
Total cost
1835000 HRK
More information

The quest for novel multifunctional and environmentally friendly materials imposes new challenges in the synthesis and performance of modern technological devices. Molecule-based compounds as a new class of materials that recently appeared on the ferroelectrics scene offer some new and exciting features that could allow for technological improvement of electronic devices. The aim of this project is to explore several classes of metal-organic compounds with potential ferroelectric properties. Design of these materials will be set on compounds with specific molecular fragments that have shown to either have the ability to possess a permanent dipole moment or to undergo or induce structural transformations that may lead to its occurrence. Compounds will be prepared by different laboratory techniques through the literature known or original synthetic procedures. To achieve optimum ferroelectric properties, material should ideally be free of impurities and defects in structure and exhibit high overall crystallinity, so detailed structural analysis will be required. A convincing strategy to confirm the paraelectric-ferroelectric phase transition, prior to ferroelectric testing, is to determine thermally induced changes measuring differential scanning calorimetry and dielectric characteristics. Finally, ferroelectric behaviour will be analysed by polarization switching and fatigue experiments. Important aspect in various electronic device applications is to produce high-quality thin films. In order to come closer towards potential applications, studied metal-organic compounds will be downsized to thin films, using simple chemical methods of depositions, such as spin- and dip-coating. Once the optimal thin film quality is achieved metal-organic compounds will be integrated into devices for ferroelectric testing. This project provides an exciting opportunity to investigate the relationship among structure, morphology, and ferroelectric properties of metal-organic compounds.

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