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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
Origin of high-power drive stability in (Na1/2Bi1/2)TiO3-BaTiO3 based piezoceramics
Abstract
<p>Hard-type ferroelectrics are indispensable and increasingly used for numerous high-power piezoelectric resonance applications, ranging from ultrasonic welding and cleaning, to voltage transformers and miniaturized ultrasonic motors in robotics. While the state-of-the-art lead-based ferroelectrics are hitting their operational limits, several new and environmentally-friendly lead-free alternative materials have emerged recently. Particularly compositions of the (Na<sub>1/2</sub>Bi<sub>1/2</sub>)TiO<sub>3</sub> family have demonstrated promising high-power properties and increased depolarization temperatures. However, the underlying mechanisms remain unclear and hamper further development of these materials. Here, we investigate the high-power electromechanical behavior of several (Na<sub>1/2</sub>Bi<sub>1/2</sub>)TiO<sub>3</sub>-based compositions and reveal that these exhibit an inherent intrinsic stability, which is retained at large vibration velocity and broad temperature range also after acceptor doping or composite formation. This results in excellent high-power figures of merit even at vibration velocities beyond 1 m/s, at which the lead-based compositions already fail. Moreover, the critical vibration velocity for fracture was found to be almost two-times higher for (Na<sub>1/2</sub>Bi<sub>1/2</sub>)TiO<sub>3</sub>-based materials, demonstrating their high dynamic fracture strength. The microscopic origin of this behavior was identified using synchrotron radiation, revealing that the strain is dominated by lattice contributions, induced by the emerging mechanical stress. Due to the large coercive stress, the domain wall contributions are in the range of only 3‒5% and, unlike in PZT, remain relatively constant also at higher vibration velocities. The high-power properties and stability are thus determined by the intrinsic loss instead of the usually-dominant extrinsic loss.</p>