The Weiss model and the Landau–Khalatnikov model for the switching of ferroelectrics

The Weiss model and the Landau–Khalatnikov model for the switching of ferroelectrics

It is shown that the molecular field theory by P. Weiss formally leads to the switching kinetics of ferroelectrics, which is described by the well-known Landau–Khalatnikov equation. The switching has a critical character, taking place only at Ea>Ec (Ea: external field, Ec: coercive field). The re...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2012-06, Vol.407 (12), p.2211-2214
Hauptverfasser: Fridkin, V., Kuehn, M., Kliem, H.
Format: Artikel
Sprache:eng
Schlagworte:
Coercive force
Computer simulation
Condensed matter
Ferroelectric materials
Field theory
Landau–Khalatnikov
Mathematical analysis
Mathematical models
Switching
Switching kinetics
Weiss model
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Zusammenfassung:It is shown that the molecular field theory by P. Weiss formally leads to the switching kinetics of ferroelectrics, which is described by the well-known Landau–Khalatnikov equation. The switching has a critical character, taking place only at Ea>Ec (Ea: external field, Ec: coercive field). The results are checked by computer simulations.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2012.02.043