Polarization-switching dynamics in bulk ferroelectrics with isometric and oriented anisometric pores

R. Khachaturyan, S. Zhukov, J. Schultheiß, C. Galassi, C. Reimuth, J. Koruza, H. Von Seggern, Y. A. Genenko

Research output: Contribution to journalArticlepeer-review


Highly porous ferroelectric ceramics possess remarkably less polarizability than dense ceramics; instead they display high tunability of various physical properties. Particularly, the shape and orientation of pores as well as the total porosity exhibit a great effect on the polarization-switching dynamics. In the present work, finite-element simulations of the electric-field distributions and related statistical distributions of local switching times are analysed and compared with the switching characteristics of porous lead zirconate titanate ceramics, extracted from the experiment by means of the inhomogeneous field mechanism model of polarization switching. Surprisingly, the simulated statistical field-distributions turn out to be virtually independent of the pore-size distribution; however, they are sensitive to the anisometric shape and orientation of the pores. Additionally, they exhibit notable broadening with increasing porosity; an effect confirmed by experimental observations.

Original languageEnglish
Article number045303
JournalJournal of Physics D: Applied Physics
Issue number4
Publication statusPublished - 2 Feb 2017


  • oriented anisometric pores
  • polarization-switching dynamics
  • porous ferroelectrics
  • statistical field-distributions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


Dive into the research topics of 'Polarization-switching dynamics in bulk ferroelectrics with isometric and oriented anisometric pores'. Together they form a unique fingerprint.

Cite this