December 2011

Journal

Local Measurements of Preisach Density in Polycrystalline Ferroelectric Capacitors

By:
Ovchinnikov, Oleg S; Jesse, Stephen ; Guo, Senli ; Seal, Katyayani ; Bintachitt, Patamas ; Fujii, I; Trolier-McKinstry, Susan; Kalinin, Sergei V
Journal Name:
Applied Physics Letters
Page Number:
112906
Volume:
96
Issue Number:
11
Publication Date:
December 12, 2011
View DOI Listing:
https://doi.org/10.1063/1.3360220

Abstract

Polarization switching in polycrystalline ferroelectric capacitors is explored using piezoresponse force microscopy (PFM) based first-order reversal curve (FORC) measurements. The band excitation method facilitates decoupling the electromechanical responses from variations in surface elastic properties. A simulated annealing method is developed to estimate the Preisach densities from PFM FORC data. Microscopic and macroscopic Preisach densities are compared, illustrating good agreement between the two.


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