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Article: Vortex structure transformation of BaTiO3 nanoparticles through the gradient function

TitleVortex structure transformation of BaTiO3 nanoparticles through the gradient function
Authors
KeywordsPhysics engineering
Issue Date2009
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2009, v. 106 n. 2 How to Cite?
AbstractPhase field method has been used to simulate the vortex structures in BaTiO3 (BTO) nanoparticles. Through the modulation of the gradient coefficients, vortices are found to transform in a path of monoclinic M A →orthorhombic→monoclinic MC →tetragonal. Although the gradient coefficients vary significantly, the change in gradient energy is remarkably small. The simulation results show that the rotation and magnitude reduction in polarization dipoles increase the bulk energy, which induces the vortex transformation process in BTO nanoparticles. Moreover, the existence of monoclinic phase is a necessity to start the polarization rotation as well as the vortex transformation process. © 2009 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/65475
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
Funding AgencyGrant Number
Council of the Hong KongHKU716007E
716508E
Computer Center of The University of Hong Kong
Funding Information:

Support from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Nos. HKU716007E and 716508E) is acknowledged. The authors gratefully acknowledge the support of the Computer Center of The University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorHong, Len_HK
dc.contributor.authorSoh, AKen_HK
dc.contributor.authorLiu, SYen_HK
dc.contributor.authorLu, Len_HK
dc.date.accessioned2010-08-10T03:10:09Z-
dc.date.available2010-08-10T03:10:09Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal Of Applied Physics, 2009, v. 106 n. 2en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/65475-
dc.description.abstractPhase field method has been used to simulate the vortex structures in BaTiO3 (BTO) nanoparticles. Through the modulation of the gradient coefficients, vortices are found to transform in a path of monoclinic M A →orthorhombic→monoclinic MC →tetragonal. Although the gradient coefficients vary significantly, the change in gradient energy is remarkably small. The simulation results show that the rotation and magnitude reduction in polarization dipoles increase the bulk energy, which induces the vortex transformation process in BTO nanoparticles. Moreover, the existence of monoclinic phase is a necessity to start the polarization rotation as well as the vortex transformation process. © 2009 American Institute of Physics.en_HK
dc.languageeng-
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsJournal of Applied Physics. Copyright © American Institute of Physics.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics engineering-
dc.titleVortex structure transformation of BaTiO3 nanoparticles through the gradient functionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=106&issue=2 article no. 024111&spage=&epage=&date=2009&atitle=Vortex+structure+transformation+of+BaTiO3+nanoparticles+through+the+gradient+function-
dc.identifier.emailSoh, AK:aksoh@hkucc.hku.hken_HK
dc.identifier.authoritySoh, AK=rp00170en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.3186038en_HK
dc.identifier.scopuseid_2-s2.0-68249144530en_HK
dc.identifier.hkuros171056-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-68249144530&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume106en_HK
dc.identifier.issue2en_HK
dc.identifier.isiWOS:000268613000119-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHong, L=23985073500en_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK
dc.identifier.scopusauthoridLiu, SY=16162042800en_HK
dc.identifier.scopusauthoridLu, L=26642926300en_HK

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