Electrostatic energy storage in antiferroelectric like perovskite

Lead-free ferroelectric Na0.5Bi0.5TiO3 (NBT) and NBT-doped Ln (Ln = Er and Ho) in both bulk and thin films forms were processed via solid-state reaction and solution deposition respectively. SEM investigations showed dense samples with fine-grained and smooth microstructure for thin films. A pure pe...

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Bibliographic Details
Published in:Superlattices and microstructures 2019-03, Vol.127, p.43-48
Main Authors: Zannen, M., Belhadi, J., Benyoussef, M., Khemakhem, H., Zaidat, K., El Marssi, M., Lahmar, A.
Format: Article
Language:English
Subjects:
Ceramics
Energy storage property
Engineering Sciences
Materials
Sodium bismuth titanate system
Thin films
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Summary:Lead-free ferroelectric Na0.5Bi0.5TiO3 (NBT) and NBT-doped Ln (Ln = Er and Ho) in both bulk and thin films forms were processed via solid-state reaction and solution deposition respectively. SEM investigations showed dense samples with fine-grained and smooth microstructure for thin films. A pure perovskite structure was observed by the X-ray diffraction for all specimens. The frequency dependences of the dielectric constant and loss tangent were investigated at room temperature and revealed a decrease in the dielectric losses with the introduction of the lanthanide element. The energy storage density (Wrec) was calculated using the obtained P–E loops. The stored and delivered energies were found depending on the form and composition of the sample. •Ln-doped Bi0.5Na0.5TiO3 (BNT) perovskite ceramics and thin films.•Improvement of dielectric properties with the incorporation of Ho and Er.•Well-shaped hysteresis loops for doped samples in both ceramics and thin films form.•Enhancement of the energy-storage properties in thin films compared to ceramics.
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2018.03.041