Title :

Polarization vortex domains induced by switching electric field in ferroelectric films with circular electrodes

Author(s) :

Baudry, Laurent [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Sené, Anaïs [Auteur]
Laboratoire des technologies innovantes - UR UPJV 3899 [LTI]
Luk'Yanchuk, Igor A. [Auteur]
Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 [LPMC]
Lahoche, Laurent [Auteur]
Laboratoire des technologies innovantes - UR UPJV 3899 [LTI]
Scott, James F. [Auteur]

Journal title :

Physical Review B: Condensed Matter and Materials Physics (1998-2015)

Pages :

024102, 7 pages

Publisher :

American Physical Society

Publication date :

2014-07-01

ISSN :

1098-0121

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

We describe ferroelectric thin films with circular electrodes and develop a thermodynamic theory that explains exotic experimental results previously reported. It is found to be especially useful for restricted geometries ...
Show more >We describe ferroelectric thin films with circular electrodes and develop a thermodynamic theory that explains exotic experimental results previously reported. It is found to be especially useful for restricted geometries such as microstructures for which boundary conditions are well known to play an important role in ferroelectric properties. We have explored a switching mechanism that consists of an inhomogeneous rotational motion of the polarization and leads to a vortex state. The vortex appearance exhibits characteristic properties of a first-order field-induced phase transition with three critical electric fields and the possibility of hysteresis behavior.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Non spécifiée

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL