Mixed Bloch-Néel-Ising character of 180° ferroelectric domain walls
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SCOPUS
- Title
- Mixed Bloch-Néel-Ising character of 180° ferroelectric domain walls
- Authors
- LEE, DONGHWA; Behera, Rakesh K.; Wu, Pingping; Xu, Haixuan; Li, Y. L.; Sinnott, Susan B.; Phillpot, Simon R.; Chen, L. Q.; Gopalan, Venkatraman
- Date Issued
- 2009-08
- Publisher
- AMER PHYSICAL SOC
- Abstract
- Ferroelectric 180 degrees domain walls are well-known to be predominantly Ising-like. Using density functional theory, and molecular dynamics simulations, the 180 degrees domain walls in prototypical ferroelectrics lead titanate (PbTiO3) and lithium niobate (LiNbO3) are shown to have mixed character; while predominantly Ising-like, they also manifest some Bloch- and Neacuteel-like character. Phase-field calculations show that such mixed wall character can be dramatically enhanced in nanoscale thin film heterostructures such as BaTiO3/SrTiO3, where the internal wall structure can form polarization vortices. Such mixed character walls can be expected to exhibit dynamical wall properties distinct from pure Ising walls.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/96478
- DOI
- 10.1103/PhysRevB.80.060102
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 80, no. 6, page. 060102, 2009-08
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- There are no files associated with this item.
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