Preisach modeling of ferroelectric pinched loops

Robert, G.; Damjanovic, D.; Setter, N.
December 2000
Applied Physics Letters;12/25/2000, Vol. 77 Issue 26
Academic Journal
The Preisach approach is applied to model ferroelectric pinched (or constricted) loops. Starting from the existence of distributed switchable dipolar defects in the material and a corresponding distribution function, an analytical expression for the resulting ferroelectric loop is obtained. The corresponding hysteresis shape is indeed showing a clear pinching. Considerations about defect distribution expression and ways to characterize it from the loop are also made. It is finally suggested that such a description can be applied to any system exhibiting a pinched loop. © 2000 American Institute of Physics.


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