Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors
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 response of 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 that can be readily measured in the nanoscale volumes and in the presence of strong electronic conductivity.
Cite
@article{arxiv.1112.3766,
title = {Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors},
author = {A. N. Morozovska and E. A. Eliseev and S. L. Bravina and Francesco Ciucci and G. S. Svechnikov and Long-Qing Chen and S. V. Kalinin},
journal= {arXiv preprint arXiv:1112.3766},
year = {2015}
}
Comments
36 pages, 10 figures, accepted to J. Appl. Phys