Surface screening of written ferroelectric domains in ambient conditions

J. J. Segura, N. Domingo, J. Fraxedas, A. Verdaguer

    Research output: Contribution to journalArticleResearchpeer-review

    12 Citations (Scopus)

    Abstract

    We have combined Piezoresponse Force Microscopy and Kelvin Probe Force Microscopy (KPFM) to study screening charge dynamics in written domains on PbZr0.2Ti0.8O3 (PZT) thin film surfaces under a controlled environment and at variable temperature. The screening dynamics decayed exponentially on a timescale of tens of minutes, consistently with what we expected for water-mediated surface diffusion of ionic species. Variable-temperature KPFM measurements showed variations in surface potential due to temporary unbalanced surface screening charges. Low humidity experiments revealed gradual incorporation of positive charges onto the surface, even in a non-reactive environment (N2), as well as deceleration of the screening dynamics upon reversal of the temperature variation. Our work may serve as a guide for future studies on the dynamics and nature of adsorbates on polarized PZT thin films. © 2013 AIP Publishing LLC.
    Original languageEnglish
    Article number187213
    JournalJournal of Applied Physics
    Volume113
    Issue number18
    DOIs
    Publication statusPublished - 14 May 2013

    Fingerprint Dive into the research topics of 'Surface screening of written ferroelectric domains in ambient conditions'. Together they form a unique fingerprint.

    Cite this