| 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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Rödel, Jürgen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Harvesting room-temperature plasticity in ceramics by mechanically seeded dislocationscitations
- 2024Dislocation Density‐Mediated Functionality in Single‐Crystal BaTiO₃
- 2022Anisotropic dislocation-domain wall interactions in ferroelectricscitations
- 2022High-temperature plastic deformation of ⟨110⟩-oriented BaTiO 3 single crystalscitations
- 2022VERFAHREN ZUR AUSSCHEIDUNGSHÄRTUNG EINER PIEZOKERAMIK UND PIEZOKERAMIK
- 2022Enhanced photoconductivity at dislocations in SrTiO 3citations
- 2021Piezotronic effect at Schottky barrier of a metal-ZnO single crystal interface
- 2021Precipitation Hardening in Ferroelectric Ceramicscitations
- 2021Dislocation-toughened ceramicscitations
- 2021Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1-xTi xO3 Piezoceramicscitations
- 2021Thermal stability of the electromechanical properties in acceptor-doped and composite-hardened (Na1/2Bi1/2)TiO3-BaTiO3ferroelectricscitations
- 2020High temperature creep-mediated functionality in polycrystalline barium titanatecitations
- 2019Mechanical versus electromechanical hardening in relaxor ferroelectric Na1/2Bi1/2TiO3-BaTiO3 with ZnO inclusionscitations
- 2018Interplay of conventional with inverse electrocaloric response in (Pb,Nb)(Zr,Sn,Ti) O3 antiferroelectric materialscitations
- 2017Hardening behavior and highly enhanced mechanical quality factor in (K0.5Na0.5)NbO3–based ceramicscitations
- 2017Stress-induced phase transition in lead-free relaxor ferroelectric compositescitations
- 2016Orientation-dependent electromechanical properties of Mn-doped (Li,Na,K)(Nb,Ta)O3 single crystalscitations
- 2014Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O-3-ZrO2 Composites Through Composition Adjustmentcitations
- 2014Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi 1/2 Na 1/2 )TiO 3 -xBaTiO 3 piezoelectric ceramicscitations
- 2008Bipolar Fatigue Caused by Field Screening in Pb(Zr,Ti)O3 Ceramics
Places of action
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article
Interplay of conventional with inverse electrocaloric response in (Pb,Nb)(Zr,Sn,Ti) O3 antiferroelectric materials
Abstract
<p>The electrocaloric effect in ferroics is considered a powerful solid-state cooling technology. Its potential is enhanced by correlation to the inverse electrocaloric effect and leads into mechanisms of decreasing or increasing dipolar entropy under applied electric field. Nevertheless, the mechanism underlying the increase of the dipolar entropy with applied electric field remains unclear and controversial. This study investigates the electrocaloric response of the antiferroelectric Pb0.99Nb0.02[(Zr0.58Sn0.43)0.92Ti0.08]0.98O3 in which the critical electric field is low enough to induce the ferroelectric phase over a broad temperature range. Utilizing temperature- and electric-field-dependent dielectric measurements, direct electrocaloric measurements, and in situ transmission electron microscopy, a crossover from conventional to inverse electrocaloric response is demonstrated. The origin of the inverse electrocaloric effect is rationalized by investigating the field-induced phase transition between antiferroelectric and ferroelectric phases. The disappearance of the latent heat at field-induced transition coincides with the crossover of the electrocaloric effect and demonstrates that the overall electrocaloric response is an interplay of different entropy contributions. This opens new opportunities for highly efficient, environmentally friendly cooling devices based on ferroic materials.</p>