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Freestanding ferroelectric bubble domains

ORAL

Abstract

Particle-like bubble domains typically form in ultra-thin ferroelectrics epitaxially clamped on flat substrates. Here, using first-principle-based simulations and local PFM measurements, we inquire if they can be as well sustained in free-standing films, which will be highly promising for some technologies. We demonstrate that these non-trivial dipolar patterns can indeed be retained in a freestanding state in ferroelectric membranes, despite the presence of inhomogeneously distributed structural ripples. We further shed some light on the origin of these latter structural ripples and analyze the stability as well as special features of free-standing polar bubbles. 

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Publication: Freestanding Ferroelectric Bubble Domains, Saidur R. Bakaul, Sergei Prokhorenko, Qi Zhang, Yousra Nahas, Yushi Hu, Amanda Petford-Long, Laurent Bellaiche, Nagarajan Valanoor, Adv. Mater., 2105432 (2021)

Presenters

  • Sergei Prokhorenko

    Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA, University of Arkansas

Authors

  • Sergei Prokhorenko

    Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA, University of Arkansas

  • Saidur R Bakaul

    Argonne National Laboratory

  • Qi Zhang

    The University of New South Wales

  • Yousra Nahas

    Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA, University of Arkansas

  • Yushi Hu

    University of Chicago

  • Amanda K Petford-Long

    Argonne National Laboratory

  • Laurent Bellaiche

    University of Arkansas

  • Nagarajan Valanoor

    University of New South Wales