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Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
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Synthesis of Barium Titanate Using Deep Eutectic Solvents.
Rebecca Boston1, Philip Y Foeller1, Derek C Sinclair1
1Department of Materials Science and Engineering, University of Sheffield , Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, United Kingdom.
Inorganic Chemistry
|December 16, 2016
Summary
Researchers developed a novel, low-cost deep eutectic solvent for synthesizing phase-pure barium titanate (BaTiO3) powders at 950 °C. This method enables rapid, low-temperature production of functional oxide materials for advanced applications.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Solid State Chemistry
Background:
- Developing low-temperature synthesis routes for functional oxides is crucial.
- Existing water-based methods are unsuitable for certain precursors like titanates.
- Need for versatile, cost-effective solvent systems for oxide synthesis.
Purpose of the Study:
- To present a novel, low-cost deep eutectic solvent system for synthesizing barium titanate (BaTiO3).
- To enable rapid, low-temperature production of phase-pure nanoscale BaTiO3 powders.
- To investigate the synthesis pathway and properties of the resulting material.
Main Methods:
- Utilized a choline chloride-malonic acid deep eutectic solvent.
- Employed alkoxide precursors for barium titanate synthesis.
- Characterized phase, morphology, and thermal transition of synthesized BaTiO3 powders and ceramics.
Main Results:
- Achieved rapid synthesis of phase-pure nanoscale barium titanate at 950 °C.
- Identified BaCl2 and TiO2 as key reaction intermediates.
- Sintered ceramics showed a ferro- to para-electric transition at 112 °C.
Conclusions:
- Choline chloride-malonic acid deep eutectic solvent is effective for low-temperature BaTiO3 synthesis.
- The developed method offers a viable alternative for producing functional oxide materials.
- The observed transition temperature shift suggests potential for impurity control in synthesis.
