Journal article
Finite curvature-mediated ferroelectricity
Nano letters, v 10(2), pp 542-546
10 Feb 2010
PMID: 20067286
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We demonstrate that ferroelectric (FE) polarizations oriented along the finite thickness direction in ultrathin films are enhanced by the introduction of extreme curvature, thereby suppressing the finite-size-driven evolution of the FE phase transition temperature T(C). The measured responses within individual nanoshells possess magnitudes nearly three times that for their planar counterparts while exhibiting finite curvature-dependent offsets in FE switching hystereses. In stark contrast to the expected scaling of a depression of T(C) with inverse thickness, results based on modified Landau-Ginzburg model calculations indicate geometric curvature-driven polarization gradients in ultrathin films result in significant increases in T(C).
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Details
- Title
- Finite curvature-mediated ferroelectricity
- Creators
- Stephen S Nonnenmann - Department of Materials Science and Engineering, DrexelUniversity, Philadelphia, Pennsylvania 19104, USAOren D LeafferEric M GalloMichael T CosterJonathan E Spanier
- Publication Details
- Nano letters, v 10(2), pp 542-546
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000274338800032
- Scopus ID
- 2-s2.0-76749128548
- Other Identifier
- 991014878487004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter