mirage

Low-symmetry monoclinic phases and polarization rotation path mediated by epitaxial strain in multiferroic BiFeO3 thin films

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Low-symmetry monoclinic phases and polarization rotation path mediated by epitaxial strain in multiferroic BiFeO3 thin films

Show simple item record

dc.contributor.author Chen, Zuhuang
dc.contributor.author Luo, Zhenlin
dc.contributor.author Huang, Chuanwei
dc.contributor.author Qi, Yajun
dc.contributor.author Yang, Ping
dc.contributor.author You, Lu
dc.contributor.author Hu, Chuansheng
dc.contributor.author Wu, Tom
dc.contributor.author Wang, Junling
dc.contributor.author Gao, Chen
dc.contributor.author Sritharan, Thirumany
dc.contributor.author Chen, Lang
dc.date.accessioned 2012-02-07T04:51:22Z
dc.date.available 2012-02-07T04:51:22Z
dc.date.copyright 2011
dc.date.issued 2012-02-07
dc.identifier.citation Chen, Z., Luo, Z., Huang, C., Qi, Y., Yang, P., You, L., & et al. (2011). Low-Symmetry Monoclinic Phases and Polarization Rotation Path Mediated by Epitaxial Strain in Multiferroic BiFeO3 Thin Films. Advanced Functional Materials, 21(1), 133-138.
dc.identifier.uri http://hdl.handle.net/10220/7515
dc.description.abstract A morphotropic phase boundary driven by epitaxial strain has been observed in lead-free multiferroic BiFeO3 thin films and the strain-driven phase transitions have been widely reported as iso-symmetric Cc-Cc by recent works. In this paper, it is suggested that the tetragonal-like BiFeO3 phase identified in epitaxial films on (001) LaAlO3 single crystal substrates is monoclinic MC. This MC phase is different from the MA type monoclinic phase reported in BiFeO3 films grown on low mismatch substrates, such as SrTiO3. This is confirmed not only by synchrotron X-ray studies but also by piezoresponse force microscopy measurements. The polarization vectors of the tetragonal-like phase lie in the (100) plane, not the (110) plane as previously reported. A phenomenological analysis is proposed to explain the formation of MC Phase. Such a low-symmetry MC phase, with its linkage to MA phase and the multiphase coexistence open an avenue for large piezoelectric response in BiFeO3 films and shed light on a complete understanding of possible polarization rotation paths and enhanced multiferroicity in BiFeO3 films mediated by epitaxial strain. This work may also aid the understanding of developing new lead-free strain-driven morphotropic phase boundary in other ferroic systems.
dc.language.iso en
dc.relation.ispartofseries Advanced functional materials
dc.rights © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.subject DRNTU::Engineering::Materials::Functional and smart materials
dc.title Low-symmetry monoclinic phases and polarization rotation path mediated by epitaxial strain in multiferroic BiFeO3 thin films
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1002/adfm.201001867

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record