| 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 |
|
Hertel, Riccardo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024The 2024 magnonics roadmapcitations
- 2024Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructurescitations
- 2022Defect-sensitive High-frequency Modes in a Three-Dimensional Artificial Magnetic Crystal
- 2021Chiral polarization textures induced by the flexoelectric effect in ferroelectric nanocylinderscitations
- 2018Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interactioncitations
- 2017Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopycitations
Places of action
| Organizations | Location | People |
|---|
article
Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopy
Abstract
International audience ; The properties of ferroelectric domain walls can significantly differ from those of their parentmaterial. Elucidating their internal structure is essential for the design of advanced devicesexploiting nanoscale ferroicity and such localized functional properties. Here, we probe theinternal structure of 180° ferroelectric domain walls in lead zirconate titanate (PZT) thin filmsand lithium tantalate bulk crystals by means of second-harmonic generation microscopy. Inboth systems, we detect a pronounced second-harmonic signal at the walls. Local polarimetryanalysis of this signal combined with numerical modelling reveals the existence of a planarpolarization within the walls, with Ne´el and Bloch-like configurations in PZT and lithiumtantalate, respectively. Moreover, we find domain wall chirality reversal at line defectscrossing lithium tantalate crystals. Our results demonstrate a clear deviation from the idealIsing configuration that is traditionally expected in uniaxial ferroelectrics, corroborating recenttheoretical predictions of a more complex, often chiral structure.