| People | Locations | Statistics |
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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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Catalan, Gustau
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Photostrictive Actuators Based on Freestanding Ferroelectric Membranescitations
- 2024Coexistence of ferroelectric and ferrielectric phases in ultrathin antiferroelectric PbZrO3 thin films
- 2023Enhanced photostrictive actuation in freestanding ferroelectric membranes
- 2022Effect of humidity on the writing speed and domain wall dynamics of ferroelectric domainscitations
- 2022Effect of Humidity on the Writing Speed and Domain Wall Dynamics of Ferroelectric Domainscitations
- 2021Strong strain gradients and phase coexistence at the metal-insulator transition in VO2 epitaxial filmscitations
- 2021Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO3Thin Film Deposited in a Composition-Spread Geometrycitations
- 2021Non-linear nanoscale piezoresponse of single ZnO nanowires affected by piezotronic effect
- 2020Control of lateral composition distribution in graded films of soluble solid systems A1-xBx by partitioned dual-beam pulsed laser depositioncitations
- 2020Temperature-independent giant dielectric response in transitional BaTiO 3 thin filmscitations
- 2020Temperature-independent giant dielectric response in transitional BaTiO3 thin filmscitations
- 2020Temperature-independent giant dielectric response in transitional BaTiO3 thin filmscitations
- 2020Temperature-independent giant dielectric response in transitional BaTiO3 thin filmscitations
- 2017Domain wall magnetoresistance in BiFeO₃ thin films measured by scanning probe microscopy
- 2016Above-Bandgap Photovoltages in Antiferroelectricscitations
- 2016A flexoelectric microelectromechanical system on siliconcitations
- 2009Effect of chemical substitution on the Neacuteel temperature of multiferroic Bi1-xCaxFeO3citations
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article
Temperature-independent giant dielectric response in transitional BaTiO3 thin films
Abstract
<jats:p>Ferroelectric materials exhibit the largest dielectric permittivities and piezoelectric responses in nature, making them invaluable in applications from supercapacitors or sensors to actuators or electromechanical transducers. The origin of this behavior is their proximity to phase transitions. However, the largest possible responses are most often not utilized due to the impracticality of using temperature as a control parameter and to operate at phase transitions. This has motivated the design of solid solutions with morphotropic phase boundaries between different polar phases that are tuned by composition and that are weakly dependent on temperature. Thus far, the best piezoelectrics have been achieved in materials with intermediate (bridging or adaptive) phases. But so far, complex chemistry or an intricate microstructure has been required to achieve temperature-independent phase-transition boundaries. Here, we report such a temperature-independent bridging state in thin films of chemically simple BaTiO3. A coexistence among tetragonal, orthorhombic, and their bridging low-symmetry phases are shown to induce continuous vertical polarization rotation, which recreates a smear in-transition state and leads to a giant temperature-independent dielectric response. The current material contains a ferroelectric state that is distinct from those at morphotropic phase boundaries and cannot be considered as ferroelectric crystals. We believe that other materials can be engineered in a similar way to contain a ferroelectric state with gradual change of structure, forming a class of transitional ferroelectrics. Similar mechanisms could be utilized in other materials to design low-power ferroelectrics, piezoelectrics, dielectrics, or shape-memory alloys, as well as efficient electro- and magnetocalorics.</jats:p>