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Article: Effects of surface tension on the size-dependent ferroelectric characteristics of free-standing BaTiO3 nano-thin films
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TitleEffects of surface tension on the size-dependent ferroelectric characteristics of free-standing BaTiO3 nano-thin films
 
AuthorsSu, Y2
Chen, H4
Li, JJ1
Soh, AK4
Weng, GJ3
 
KeywordsCoercive field
Critical state
Domain structure
Ferroelectric characteristics
Ferroelectric property
 
Issue Date2011
 
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
 
CitationJournal of Applied Physics, 2011, v. 110 n. 8, article no. 084108 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.3652906
 
AbstractIntrinsic surface tension of nanoscale ferroelectric thin film tends to induce tensile stress in its surface layer, whereas the other portion of the film is subjected to compression to maintain mechanical balance. A continuum-based phase-field model accounting for such surface effect has been set up to investigate the evolution of domain structure and thickness-dependent ferroelectric properties of free-standing BaTiO 3 nano-thin films. It was observed that both remnant polarization and coercive field decrease with a decrease of film thickness and increase of surface tension, and that, for film thickness ranging from 10-20 nm, both properties decreased sharply at the surface strain 2-3ε 0 (ε 0 being the spontaneous strain). Further decrease in film thickness or increase in surface tension could result in loss of ferroelectricity. Such a critical state for the ferroelectric-to-paraelectric transition has also been established for the range of film thickness 4-20 nm. © 2011 American Institute of Physics.
 
ISSN0021-8979
2013 Impact Factor: 2.185
 
DOIhttp://dx.doi.org/10.1063/1.3652906
 
ISI Accession Number IDWOS:000296519900114
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorSu, Y
 
dc.contributor.authorChen, H
 
dc.contributor.authorLi, JJ
 
dc.contributor.authorSoh, AK
 
dc.contributor.authorWeng, GJ
 
dc.date.accessioned2012-07-16T09:46:52Z
 
dc.date.available2012-07-16T09:46:52Z
 
dc.date.issued2011
 
dc.description.abstractIntrinsic surface tension of nanoscale ferroelectric thin film tends to induce tensile stress in its surface layer, whereas the other portion of the film is subjected to compression to maintain mechanical balance. A continuum-based phase-field model accounting for such surface effect has been set up to investigate the evolution of domain structure and thickness-dependent ferroelectric properties of free-standing BaTiO 3 nano-thin films. It was observed that both remnant polarization and coercive field decrease with a decrease of film thickness and increase of surface tension, and that, for film thickness ranging from 10-20 nm, both properties decreased sharply at the surface strain 2-3ε 0 (ε 0 being the spontaneous strain). Further decrease in film thickness or increase in surface tension could result in loss of ferroelectricity. Such a critical state for the ferroelectric-to-paraelectric transition has also been established for the range of film thickness 4-20 nm. © 2011 American Institute of Physics.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationJournal of Applied Physics, 2011, v. 110 n. 8, article no. 084108 [How to Cite?]
DOI: http://dx.doi.org/10.1063/1.3652906
 
dc.identifier.doihttp://dx.doi.org/10.1063/1.3652906
 
dc.identifier.hkuros200548
 
dc.identifier.isiWOS:000296519900114
 
dc.identifier.issn0021-8979
2013 Impact Factor: 2.185
 
dc.identifier.issue8, article no. 084108
 
dc.identifier.scopuseid_2-s2.0-80655139057
 
dc.identifier.urihttp://hdl.handle.net/10722/152712
 
dc.identifier.volume110
 
dc.languageeng
 
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
 
dc.publisher.placeUnited States
 
dc.relation.ispartofJournal of Applied Physics
 
dc.relation.referencesReferences in Scopus
 
dc.rightsJournal of Applied Physics. Copyright © American Institute of Physics.
 
dc.rightsCopyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Journal of Applied Physics, 2011, v. 110 n. 8, article no. 084108) and may be found at (http://jap.aip.org/resource/1/japiau/v110/i8/p084108_s1).
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.subjectCoercive field
 
dc.subjectCritical state
 
dc.subjectDomain structure
 
dc.subjectFerroelectric characteristics
 
dc.subjectFerroelectric property
 
dc.titleEffects of surface tension on the size-dependent ferroelectric characteristics of free-standing BaTiO3 nano-thin films
 
dc.typeArticle
 
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<subject>Critical state</subject>
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Author Affiliations
  1. City College of New York
  2. Beijing Institute of Technology
  3. Rutgers, The State University of New Jersey
  4. The University of Hong Kong