| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Chen, Jun
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Graphene-enhanced, wear-resistant and thermal-conductive, anti-/de-icing Gelcoat composite coatingcitations
- 2023Elaboration and characterisation of polypropylene/ multi-walled carbon nanotubes nanocomposites to fabricate 3D-printed parts
- 2022Stress relaxation in III-V nitrides: investigation of metallic atoms interaction with the N-vacancycitations
- 2022Cu-THQ-EFG Composite for Highly Selective Electrochemical CO2 Reduction to Formate at Low Overpotentialscitations
- 2020Nanodomain patterns in ultra-tetragonal lead titanate (PbTiO 3 )citations
- 2020Nanodomain Patterns in Ultra-Tetragonal Lead Titanate (PbTiO3)citations
- 2019Misorientation dependence grain boundary complexions in <111> symmetric tilt Al grain boundariescitations
- 2018A Theoretical Investigation of the Miscibility and Structural Properties of In x Al y Ga 1−x−y N Alloyscitations
- 2018A High-Throughput Screening Approach to Identify Therapeutics for the Treatment of Diamond-Blackfan Anaemia
- 2017Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devicescitations
- 2017Stress-induced phase transition in lead-free relaxor ferroelectric compositescitations
- 2015High Acetic Acid Production Rate Obtained by Microbial Electrosynthesis from Carbon Dioxidecitations
- 2015Improvement by Nanofibers of Load Transfer in Carbon Fiber Reinforced Compositescitations
- 2014Hybrid carbon nanotube—silica/ polyvinyl alcohol nanocomposites films: preparation and characterisationcitations
- 2014Chemical activity of oxygen vacancies on ceria: a combined experimental and theoretical study on CeO2(111)citations
- 2009Corrosion of friction stir welded magnesium alloy AM50citations
- 2008Microstructure evolution and tensile properties of friction-stir-welded AM50 magnesium alloycitations
- 2007Electrochemical behavior of magnesium alloys in simulated body fluids
- 2005'Stuffed' conducting polymerscitations
Places of action
| Organizations | Location | People |
|---|
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>