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| Title: | Size-dependent polarization distribution in ferroelectric nanostructures : phase field simulations |
| Authors: | Wang, Jie
Kamlah, Marc
Zhang, Tong-Yi
Li, Yulan
Chen, Long-Qing |
| Keywords: | Dielectric polarization
Ferroelectric materials
Nanowires |
| Issue Date: | Apr-2008 |
| Citation: | Applied physics letters, v. 92, 162905 (2008) |
| Abstract: | From phase field simulations, we investigate the size-dependent polarization distribution in ferroelectric nanostructures embedded in a nonferroelectric medium. The simulation results exhibit that vortex structures of polarizations and single-domain structures are formed in ferroelectric nanodots and nanowires, respectively. Furthermore, a single-vortex structure is formed in the ferroelectric nanodots if the aspect ratio of thickness to lateral size is less than a critical value, whereas the ferroelectric nanodots are in a multivortex state if the aspect ratio exceeds the critical value. When the aspect ratio approaches infinity, nanodots will become nanowires, in which polarizations are homogeneous. |
| Rights: | Applied Physics Letters © copyright (2008) American Institute of Physics. The Journal's web site is located at http://link.aip.org/link/?APPLAB/92/162905/1 |
| URI: | http://hdl.handle.net/1783.1/3525 |
| Appears in Collections: | MECH Journal/Magazine Articles
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| ApplPhysLett_92_1629051.pdf | pre-published version | 301Kb | Adobe PDF | View/Open |
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