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Phys. Rev. Lett. 84, 175–178 (2000)

Intrinsic Ferroelectric Coercive Field

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Stephen Ducharme1, V. M. Fridkin1,2, A. V. Bune1,2, S. P. Palto2, L. M. Blinov2, N. N. Petukhova2, and S. G. Yudin2
1Department of Physics and Astronomy, Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588-0111
2Institute of Crystallography, Russian Academy of Sciences, Moscow 117333, Russia

Received 29 June 1999; published in the issue dated 3 January 2000

The Landau-Ginzburg theory of ferroelectricity predicts the intrinsic coercive field for polarization reversal, but the observed extrinsic coercive field is always much smaller as a result of nucleation, dynamic processes not covered by the static theory. We have realized the intrinsic coercive field for the first time, in two-dimensional Langmuir-Blodgett polymer films as thin as 1 nm. The measured coercive field is in good agreement with the theoretical intrinsic value, exhibits the expected dependence on temperature, and does not depend on thickness below 15 nm.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.175
DOI:
10.1103/PhysRevLett.84.175
PACS:
77.80.Dj, 64.70.Kb

See Also

Comment: A. M. Bratkovsky and A. P. Levanyuk, Comment on: “Intrinsic Ferroelectric Coercive Field”, Phys. Rev. Lett. 87, 019701 (2001).

Comment: R. L. Moreira, Comment on “Intrinsic Ferroelectric Coercive Field”, Phys. Rev. Lett. 88, 179701 (2002).

Reply: Stephen Ducharme and V. M. Fridkin, Ducharme and Fridkin Reply:, Phys. Rev. Lett. 87, 019702 (2001).

Reply: Stephen Ducharme and V. M. Fridkin, Ducharme and Fridkin Reply:, Phys. Rev. Lett. 88, 179702 (2002).

 
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