论文信息 - Local measurements of Preisach density in polycrystalline ferroelectric capacitors using piezorespon

Local measurements of Preisach density in polycrystalline ferroelectric capacitors using piezorespon

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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