3 years ago

Adsorbate Screening of Surface Charge of Microscopic Ferroelectric Domains in Sol–Gel PbZr0.2Ti0.8O3 Thin Films

Adsorbate Screening of Surface Charge of Microscopic Ferroelectric Domains in Sol–Gel PbZr0.2Ti0.8O3 Thin Films
Nicolas Chevalier, Claire Mathieu, Dominique Martinotti, Olivier Copie, Nicholas Barrett, Olivier Renault, Sara Gonzalez, Cindy L. Rountree, Gwenael Le Rhun
We present a study of adsorbate screening of surface charge in microscopic ferroelectric domains in a sol–gel grown PbZr0.2Ti0.8O3 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.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b08925

DOI: 10.1021/acsami.7b08925

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