Persistent type-II multiferroicity in nanostructured MnWO4 ceramics
Résumé
In archetypal ferroelectrics, the polarization and related properties result from structural lattice distortions.1 For example, in BaTiO3, it is the cationic off-centering versus the oxygen octahedra that is at the origin of the exceptional dielectric properties. Keeping these properties when downsizing such compounds is thus a challenge because the lattice elastic energy is disturbed by the surface energy even at relatively large grain size of several hundreds of nm...
Domaines
Matériaux| Origine | Fichiers éditeurs autorisés sur une archive ouverte |
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