Frequency dependent dynamical electromechanical response of mixed ionic-electronic conductors

A. N. Morozovska, E. A. Eliseev, S. L. Bravina, Francesco Ciucci, G. S. Svechnikov, Long Qing Chen, S. V. Kalinin

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28 Scopus citations

Abstract

Frequency dependent dynamic electromechanical response of the mixed ionic-electronic conductor film to a periodic electric bias is analyzed for different electronic and ionic boundary conditions. Dynamic effects of mobile ions concentration (stoichiometry contribution), charge state of acceptors (donors), electron concentration (electron-phonon coupling via the deformation potential), and flexoelectric effect contribution are discussed. A variety of possible nonlinear dynamic electromechanical responses of mixed electronic ionic conductors (MIEC) films including quasi-elliptic curves, asymmetric hysteresis-like loops with pronounced memory window, and butterfly-like curves are calculated. The electromechanical response of ionic semiconductor is predicted to be a powerful descriptor of local valence states, band structure and electron-phonon correlations thatcan be readily measured in the nanoscale volumes and in the presence of strong electronic conductivity.

Original languageEnglish (US)
Article number014107
JournalJournal of Applied Physics
Volume111
Issue number1
DOIs
StatePublished - Jan 1 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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