| 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 |
|
Barati, Mahmoud
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Local structural mechanism for enhanced energy storage properties in heterovalent doped NaNbO3 ceramicscitations
- 2024Local structural mechanism for enhanced energy storage properties in heterovalent doped NaNbO 3 ceramicscitations
- 2023Low cycle fatigue lifetime prediction of superplastic shape memory alloy structures ; Low cycle fatigue lifetime prediction of superplastic shape memory alloy structures: Application to endodontic instrumentscitations
- 2023Electric resistivity evolution in NiTi alloys under thermomechanical loading: phase proportioning, elasticity and plasticity effectscitations
- 2023Electric resistivity evolution in NiTi alloys under thermomechanical loading: phase proportioning, elasticity and plasticity effectscitations
- 2022Stress raisers and fracture in shape memory alloys: review and ongoing challengescitations
- 2020Self-heating of metastable 304L austenitic stainless steel under cyclic loading: Influence of initial martensite volume fraction, testing temperature and pre-straincitations
- 2020Self-heating of metastable 304L austenitic stainless steel under cyclic loading: Influence of initial martensite volume fraction, testing temperature and pre-straincitations
- 2019Modeling of torsion fatigue in shape memory alloyscitations
- 2017On the origin of residual strain in shape memory alloys: Experimental investigation on evolutions in the microstructure of CuAlBe during complex thermomechanical loadings
Places of action
| Organizations | Location | People |
|---|
article
Local structural mechanism for enhanced energy storage properties in heterovalent doped NaNbO3 ceramics
Abstract
<p>In recent years, there is a growing interest for new lead-free oxides with reversible antiferroelectric (AFE)-ferroelectric (FE) phase transition for high-power energy-storage applications. NaNbO<sub>3</sub>-based ceramics are particularly attractive due to their easy synthesis and cost-effectiveness. In order to stabilize reversible AFE-FE phase transition, NaNbO<sub>3</sub> is doped with a combination of heterovalent substitutions, although the underlying structural mechanism for the same is poorly understood. Here, we investigated local and average structures of Ca/Zr doped NaNbO<sub>3</sub> using neutron total scattering. We show that Ca/Zr doping increases the average AFE phase (Pbma) fraction, however, the material remains as a composite of both FE (P2<sub>1</sub>ma) and AFE regions. Analysis of local structure suggests that increase in the long-range AFE phase results from more extensive twinning of local FE regions, due to introduced charge disorder. We propose that enhanced energy-storage properties of Ca/Zr-doped NaNbO<sub>3</sub> arises from localized twin boundary motion between the defect-induced pinning centers.</p>