Speaker
Dr
Laura Maurel
(Paul Scherrer Institut-ETH Zurich)
Description
The control of the oxygen vacancies content in magnetoelectric oxides opens new routes to induce unexpected properties in strained thin films. Here we show experimental evidence for the increase of the oxygen-vacancy content upon increasing tensile epitaxial strain in multiferroic SrMnO3 thin films. Furthermore, a novel dependence of the oxygen stoichiometry on the film thickness has been found, allowing us to control the concentration of these defects by both the applied strain and film thickness. We analyze the effect of the oxygen-vacancy content on the ferroic properties of strained SrMnO3 films focusing on the generation of a flexoelectric component that rotates the in-plane <110> ferroelectric polarization.
Authors
Dr
Laura Maurel
(Paul Scherrer Institut-ETH Zurich)
Dr
Eric Langenberg
(Instituto de Ciencias de Materiales de Aragon)
Dr
Roger Guzmán
(Laboratorio de Microscopías Avanzadas - Instituto de Nanociencia de Aragón)
Dr
César Magén
(Laboratorio de Microscopías Avanzadas - Instituto de Nanociencia de Aragón)
Prof.
Pedro Antonio Algarabel
(Departamento de Física de la Materia Condensada)
Dr
Jose Angel Pardo
(Laboratorio de Microscopías Avanzadas - Instituto de Nanociencia de Aragón )
