| 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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Koruza, Jurij
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (50/50 displayed)
- 2024Coupled local residual shear and compressive strain in NaNbO 3 ceramics under coolingcitations
- 2024Heterogeneous Antiferroelectric Ordering in NaNbO3-SrSnO3 Ceramics Revealed by Direct Superstructure Imaging
- 2024Heterogeneous Antiferroelectric Ordering in NaNbO 3 –SrSnO 3 Ceramics Revealed by Direct Superstructure Imaging
- 2024Coupled local residual shear and compressive strain in NaNbO3 ceramics under coolingcitations
- 2023Synergetic boost of functional properties near critical end points in antiferroelectric systemscitations
- 2022Anisotropic dislocation-domain wall interactions in ferroelectricscitations
- 2022Revealing the solid-state processing mechanisms of antiferroelectric AgNbO3 for energy storagecitations
- 2022Dynamic scaling properties of multistep polarization response in ferroelectrics
- 2022Origin of high-power drive stability in (Na1/2Bi1/2)TiO3-BaTiO3 based piezoceramicscitations
- 2022VERFAHREN ZUR AUSSCHEIDUNGSHÄRTUNG EINER PIEZOKERAMIK UND PIEZOKERAMIK
- 2021Domain morphology of newly designed lead-free antiferroelectric NaNbO3-SrSnO3 ceramicscitations
- 2021Precipitation Hardening in Ferroelectric 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
- 2021Influence of Defects on the Schottky Barrier Height at BaTiO3/RuO2 Interfacescitations
- 2020Domain wall-grain boundary interactions in polycrystalline Pb(Zr0.7Ti0.3)O3 piezoceramicscitations
- 2020Na-23 NMR Spectroscopic Quantification of the Antiferroelectric-Ferroelectric Phase Coexistence in Sodium Niobatecitations
- 2020Electric-field-induced antiferroelectric to ferroelectric phase transition in polycrystalline NaNbO3citations
- 2020High temperature creep-mediated functionality in polycrystalline barium titanatecitations
- 2019Orienting anisometric pores in ferroelectrics:Piezoelectric property engineering through local electric field distributionscitations
- 2019Orienting anisometric pores in ferroelectricscitations
- 2019Mechanical versus electromechanical hardening in relaxor ferroelectric Na1/2Bi1/2TiO3-BaTiO3 with ZnO inclusionscitations
- 2018Cytotoxicity, chemical stability, and surface properties of ferroelectric ceramics for biomaterialscitations
- 2018Impact of Polarization Dynamics and Charged Defects on the Electrocaloric Response of Ferroelectric Pb(Zr,Ti)O3 Ceramicscitations
- 2018Review of methods for powder-based processingcitations
- 2018Interplay of conventional with inverse electrocaloric response in (Pb,Nb)(Zr,Sn,Ti) O3 antiferroelectric materialscitations
- 2017Multilayer lead-free piezoceramic compositescitations
- 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
- 2017BaTiO3-based piezoelectricscitations
- 2016Effects of Bi2O3 additive on sintering process and dielectric, ferroelectric, and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramicscitations
- 2016Formation of the core-shell microstructure in lead-free Bi1/2Na1/2TiO3-SrTiO3 piezoceramics and its influence on the electromechanical propertiescitations
- 2016Orientation-dependent electromechanical properties of Mn-doped (Li,Na,K)(Nb,Ta)O3 single crystalscitations
- 2016Effect of texturing on polarization switching dynamics in ferroelectric ceramicscitations
- 2015Polar Oxide Nanopowders Prepared by Mechanical Treatmentscitations
- 2015Revisiting the blocking force test on ferroelectric ceramics using high energy x-ray diffractioncitations
- 2015Revisiting the blocking force test on ferroelectric ceramics using high energy x-ray diffractioncitations
- 2015Enhancing Electromechanical Properties of Lead-Free Ferroelectrics With Bilayer Ceramic/Ceramic Compositescitations
- 2015Large electrocaloric effect in lead-free K0.5Na0.5NbO3-SrTiO3 ceramicscitations
- 2015Anomalous dielectric and thermal properties of Ba-doped PbZrO3 ceramicscitations
- 2015Enhancing the operational range of piezoelectric actuators by uniaxial compressive preloadingcitations
- 2015Sintering of lead-free piezoelectric sodium potassium niobate ceramicscitations
- 2014Initial stage sintering mechanism of NaNbO3 and implications regarding the densification of alkaline niobatescitations
- 2014Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O-3-ZrO2 Composites Through Composition Adjustmentcitations
- 2014Determination of the True Operational Range of a Piezoelectric Actuatorcitations
- 2014Mechanical constitutive behavior and exceptional blocking force of lead-free BZT-xBCT piezoceramicscitations
- 2013Synthesis and Properties of NiFe2O4 and Ni0.5Zn0.5Fe2O4 Prepared by Auto-combustion Method
- 2012Synthesis procedure and properties of NiFe2O4 – BaTiO3 composites
- 2012Deconvolving Ferroelastic and Phase Transformation Toughening in Pb(Zr1-xTix)O-3 and Pb1-yLay(Zr1-xTix)O-3citations
- 2011Compositional Dependence of R-curve Behavior in Soft Pb(Zr1-xTix)O-3 Ceramicscitations
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article
Stress-induced phase transition in lead-free relaxor ferroelectric composites
Abstract
<p>Piezoelectric materials are considered an enabling technology generating an annual turnover of about 20 billion $. At present, lead-based materials dominate the market with the known risk to health and environment. One of the three key competitors for their replacement is the class of sodium bismuth titanate (NBT)-based relaxor ferroelectrics, the use of which is limited by thermal depolarization. An increased thermal stability has recently been experimentally demonstrated for composites of Na<sub>1/2</sub>Bi<sub>1/2</sub>TiO<sub>3</sub>-6BaTiO<sub>3</sub> with ZnO inclusions (NBT-6BT:xZnO). However, the exact mechanism for this enhancement still remains to be clarified. In this study, piezoresponse force microscopy and <sup>23</sup>Na NMR spectroscopy were used to demonstrate that the incorporation of ZnO leads to a stabilization of the induced ferroelectric state at room temperature. Temperature-dependent measurements of the relative dielectric permittivity ε′(T), the piezoelectric coefficient d<sub>33</sub> and the strain response revealed an increase of the working temperature by 37 °C. A simple mechanics model suggests that thermal deviatoric stresses stabilize the ferroelectric phase and increase, as well as broaden, the temperature range of depolarization. Our results reveal a generally applicable mechanism of enhancing phase stability in relaxor ferroelectric materials, which is also valid for phase diagrams of other ceramic matrix composites.</p>