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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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
Issue number1
StatePublished - Jan 1 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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