Phys. Rev. Lett. 84, 3177–3180 (2000)Abrupt Appearance of the Domain Pattern and Fatigue of Thin Ferroelectric FilmsReceived 11 August 1999; published in the issue dated 3 April 2000 We study the domain structure in ferroelectric thin films with a “passive” (nonferroelectric) layer at the interface between the film and electrodes. An abrupt transition from a monodomain to a polydomain state has been found with the increase of the passive layer thickness d. The domain width changes very quickly at the transition (exponentially with d-2). The slope of the hysteresis loop is in agreement with experiment, assuming realistic parameters of the layer. The slope scales as 1/d, involving only the properties of the layer. We believe that specific properties of the domain structure in ferroelectrics with a passive layer can resolve the long-standing “paradox of the coercive field.” © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.3177
DOI:
10.1103/PhysRevLett.84.3177
PACS:
77.80.Dj, 84.32.Tt, 85.50.+k
See AlsoComment: Alexander K. Tagantsev, Comment on “Abrupt Appearance of the Domain Pattern and Fatigue of Thin Ferroelectric Films”, Phys. Rev. Lett. 87, 179702 (2001). Reply: A. M. Bratkovsky and A. P. Levanyuk, Bratkovsky and Levanyuk Reply:, Phys. Rev. Lett. 87, 179703 (2001). |
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