Adsorbate Screening of Surface Charge of Microscopic Ferroelectric Domains in Sol–Gel PbZr$_{0.2}$ Ti$_{0.8}$ O$_3$ Thin Films

Olivier Copie 1, 2 Nicolas Chevalier 3, 4 Gwenael Le Rhun 3, 4 Cindy Rountree 5 Dominique Martinotti 6 Sara Gonzalez 2 Claire Mathieu 2 Olivier Renault 3, 4 Nicholas Barrett 2, *
* Corresponding author
2 LENSIS - Laboratoire d'Etude des NanoStructures et Imagerie de Surface
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
5 SPHYNX - Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
6 LEPO - Laboratoire d'Electronique et nanoPhotonique Organique
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : We present a study of adsorbate screening of surface charge in microscopic ferroelectric domains in a sol−gel grown PbZr$_{0.2}$ Ti$_{0.8}$ O$_3$ thin film. Low-energy and photoemission electron microscopies were employed to characterize the temperature dependence of surface charge and polarization of ferroelectric domains written by atomic force microscopy. We study the role of charged adsorbates in screening of polarization-bound charges. We demonstrate that full-field electron microscopy is suitable for the determination of ferroelectric system properties such as the Curie temperature.
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Olivier Copie, Nicolas Chevalier, Gwenael Le Rhun, Cindy Rountree, Dominique Martinotti, et al.. Adsorbate Screening of Surface Charge of Microscopic Ferroelectric Domains in Sol–Gel PbZr$_{0.2}$ Ti$_{0.8}$ O$_3$ Thin Films. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2017, 9 (34), pp.29311 - 29317. ⟨10.1021/acsami.7b08925⟩. ⟨cea-01591642⟩

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