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Title: Self-consistent modelling of electrochemical strain microscopy in mixed ionic-electronic conductors: Nonlinear and dynamic regimes

Journal Article · · Journal of Applied Physics
DOI: https://doi.org/10.1063/1.4927815 · OSTI ID:1337498
 [1];  [2];  [3];  [4]; ORCiD logo [5];  [1]
  1. National Academy of Sciences of Ukraine (Ukraine)
  2. National Research Univ. of Electronic Technology "MIET", Moscow (Russia)
  3. National Univ. of Science and Technology "MISiS", Moscow (Russia)
  4. NAS of Ukraine (Ukraine)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The frequency dependent Electrochemical Strain Microscopy (ESM) response of mixed ionic-electronic conductors is analyzed within the framework of Fermi-Dirac statistics and the Vegard law, accounting for steric effects from mobile donors. The emergence of dynamic charge waves and nonlinear deformation of the surface in response to bias applied to the tip-surface junction is numerically explored. The 2D maps of the strain and concentration distributions across the mixed ionic-electronic conductor and bias-induced surface displacements are calculated. Furthermore, the obtained numerical results can be applied to quantify the ESM response of Li-based solid electrolytes, materials with resistive switching, and electroactive ferroelectric polymers, which are of potential interest for flexible and high-density non-volatile memory devices.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1337498
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 118; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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