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 language | English (US) |
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Article number | 014107 |
Journal | Journal of Applied Physics |
Volume | 111 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2012 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy