TITLE

A model for fatigue in ferroelectric thin films based on trapping of carriers at interfacial states

AUTHOR(S)
Le Rhun, G.; Poullain, G.; Bouregba, R.
PUB. DATE
October 2004
SOURCE
Journal of Applied Physics;10/1/2004, Vol. 96 Issue 7, p3876
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Experimental data on fatigue in the Metal/Ferroelectric/Metal thin film structures are reported. A model is proposed based on the trapping and the releasing of the free carriers in the band-gap states located at the interfaces between the electrodes and the ferroelectric film. Fits of the experimental data with the plots calculated from the model show very good agreement. In particular, the fatigue dependence on both the frequency and the magnitude of the applied voltage is well reproduced by the model. Saturation of fatigue for a large number of cycles is also predicted.
ACCESSION #
14546519

 

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