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conference paper
Structure and Energy of Charged Domain Walls in Ferroelectrics
2009
Isaf: 2009 18Th Ieee International Symposium On The Applications Of Ferroelectrics
The problem of the structure and energy of a charged 180-degree head-to-head domain wall is considered, using Landau theory. It was found that the scales controlling the wall structure can be very different from the Debye radius. Depending on the spontaneous polarization and the concentration of free carriers, these scales can be about the Thomas-Fermi screening length or about those typical for screening in nonlinear (Thomas-Fermi or Debye) regimes. In the typical case of perovskites, like BaTiO3, at room temperature, domain wall width is about the spatial scale of the nonlinear Thomas-Fermi screening.
Type
conference paper
Web of Science ID
WOS:000277496800008
Authors
Publication date
2009
Published in
Isaf: 2009 18Th Ieee International Symposium On The Applications Of Ferroelectrics
Start page
37
End page
42
Subjects
Peer reviewed
REVIEWED
EPFL units
Event name | Event place | Event date |
Xian, PEOPLES R CHINA | Aug 23-27, 2009 | |
Available on Infoscience
November 30, 2010
Use this identifier to reference this record