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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Khanbareh, Hamideh
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Porous Structure Enhances the Longitudinal Piezoelectric Coefficient and Electromechanical Coupling Coefficient of Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3citations
- 2024Porous structure enhances the longitudinal piezoelectric coefficient and electromechanical coupling coefficient of lead‐free (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3citations
- 2024Temperature-Dependent Ferroelectric Properties and Aging Behavior of Freeze-Cast Bismuth Ferrite-Barium Titanate Ceramicscitations
- 2024Temperature-Dependent Ferroelectric Properties and Aging Behavior of Freeze-Cast Bismuth Ferrite–Barium Titanate Ceramicscitations
- 2024Exploring Lead-Free Materials for Screen-Printed Piezoelectric Wearable Devicescitations
- 2023Enhancing Neural Stem Cell Stimulation with Structured Piezoelectric Compositescitations
- 2022Innovative piezo-active composites and their structure - Property relationshipscitations
- 2022Piezoelectric materials and systems for tissue engineering and implantable energy harvesting devices for biomedical applicationscitations
- 2021Additively manufactured BaTiOcitations
- 2021Additively manufactured BaTiO3 composite scaffolds: a novel strategy for load bearing bone tissue engineering applicationscitations
- 2021Additively manufactured BaTiO3 composite scaffoldscitations
- 2020Harnessing Plasticity in an Amine-Borane as a Piezoelectric and Pyroelectric Flexible Filmcitations
- 2019Piezoelectric performance of PZT-based materials with aligned porosity::experiment and modellingcitations
- 2019Experimental studies on effective properties and related parameters of piezo-particulate composites
- 2019Piezo-active composites
- 2019Modified energy harvesting figures of merit for stress- and strain-driven piezoelectric systemscitations
- 2019Modelling of the composite structure formation during dielectrophoresis
- 2019Piezoelectric performance of PZT-based materials with aligned porosity:citations
- 2018Understanding the effect of porosity on the polarisation-field response of ferroelectric materialscitations
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article
Porous structure enhances the longitudinal piezoelectric coefficient and electromechanical coupling coefficient of lead‐free (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3
Abstract
The introduction of porosity into ferroelectric ceramics can decrease the effective permittivity, thereby enhancing the open circuit voltage and electrical energy generated by the direct piezoelectric effect. However, the decrease in the longitudinal piezoelectric coefficient (d33) with increasing porosity levels currently limiting the range of pore fractions that can be employed. By introducing aligned lamellar pores into (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3, this paper demonstrates an unusual 22–41% enhancement in the d33 compared to its dense counterpart. This unique combination of high d33 and a low permittivity leads to a significantly improved voltage coefficient (g33), energy harvesting figure of merit (FoM33) and electromechanical coupling coefficient ( k 33 2 $k_{33}^2$ ). The underlying mechanism for the improved properties is demonstrated to be a synergy between the low defect concentration and high internal polarizing field within the porous lamellar structure. This work provides insights into the design of porous ferroelectrics for applications related to sensors, energy harvesters, and actuators.