| Ferroelectric and ferroelastic domain wall motion in unconstrained Pb(Zr,Ti)O3 microtubes and thin films. | |
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MedLine Citation:
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PMID: 20378441 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Ferroelectric polarization switching of high aspect ratio (>80:1) PbZr(0.52)Ti(0.48)O(3) (PZT) microtubes with a wall thickness of ~200 nm was investigated. A charge-based technique was used to assess the dielectric and ferroelectric properties of individual mechanically-unconstrained PZT microtubes with interdigitated electrodes. An enhancement in the degree of ferroelastic (non-180 degrees ) domain wall motion was observed in the tubes relative to films of similar thickness on rigid substrates. The dielectric response of the tubes showed a Rayleigh-like ac field dependence over a wide temperature range; the extent of the extrinsic contribution to the dielectric response dropped as the temperature approached 10K, but remained finite. This work demonstrates a general methodology for directly electrically addressing small, unconstrained ferroelectric devices, extending the range of driving fields and temperatures over which these materials can be probed. |
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Authors:
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Srowthi Bharadwaja; Paul Moses; Susan Trolier-McKinstry; Theresa Mayer; Paolo Bettotti; Lorenzo Pavesi |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: IEEE transactions on ultrasonics, ferroelectrics, and frequency control Volume: 57 ISSN: 1525-8955 ISO Abbreviation: IEEE Trans Ultrason Ferroelectr Freq Control Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-04-09 Completed Date: 2010-06-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882735 Medline TA: IEEE Trans Ultrason Ferroelectr Freq Control Country: United States |
Other Details:
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Languages: eng Pagination: 792-800 Citation Subset: - |
Affiliation:
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Materials Research Institute, The Pennsylvania State University, University Park, PA, USA. bss11@psu.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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