Files in this item
Relaxor-to-ferroelectric crossover and disruption of polar order in "empty" tetragonal tungsten bronzes
Item metadata
dc.contributor.author | Gardner, Jonathan | |
dc.contributor.author | Yu, Fengjiao | |
dc.contributor.author | Tang, Chiu | |
dc.contributor.author | Kockelmann, Winfried | |
dc.contributor.author | Zhou, Wuzong | |
dc.contributor.author | Morrison, Finlay D. | |
dc.date.accessioned | 2017-07-12T23:33:44Z | |
dc.date.available | 2017-07-12T23:33:44Z | |
dc.date.issued | 2016-07-12 | |
dc.identifier | 243433411 | |
dc.identifier | ac8d10ce-061a-4a6d-a558-a453a48ead53 | |
dc.identifier | 84978374513 | |
dc.identifier | 000379704100013 | |
dc.identifier.citation | Gardner , J , Yu , F , Tang , C , Kockelmann , W , Zhou , W & Morrison , F D 2016 , ' Relaxor-to-ferroelectric crossover and disruption of polar order in "empty" tetragonal tungsten bronzes ' , Chemistry of Materials , vol. 28 , no. 13 , pp. 4616-4627 . https://doi.org/10.1021/acs.chemmater.6b01306 | en |
dc.identifier.issn | 0897-4756 | |
dc.identifier.other | ORCID: /0000-0002-2813-3142/work/48131879 | |
dc.identifier.other | ORCID: /0000-0001-9752-7076/work/58054976 | |
dc.identifier.other | ORCID: /0000-0002-8862-8315/work/61133151 | |
dc.identifier.uri | https://hdl.handle.net/10023/11193 | |
dc.description | JG would like to thank the EPSRC for provision of a studentship via the doctoral training grant (EP/K503162/1). The research data (and/or materials) supporting this publication can be accessed at [http://dx.doi.org/10.17630/a7a9bc13-b5cb-485d-914a-923832f25190] | en |
dc.description.abstract | Combined temperature-dependent structural and electrical characterization of a series of “empty” ferroelectric tetragonal tungsten bronzes (TTBs) of composition Ba4(La1- xNdx)0.67□1.33Nb10O30 are reported. The La-material exhibits a temperature dependent crossover from relaxor-ferroelectric to polar (but non-ferroelectric) to linear dielectric behavior. The loss of ferroelectric switching in the polar, non-ferroelectric phase is accompanied by disorder associated with structural relaxation due the significant vacancy concentration at the A1-perovskite-like site. In this disordered regime, large polarization can be re-established with application of sufficient electric field, however relaxation back into the disordered phase occurs on removal of the field as indicated by the loss of remenant polarization. The field against which “backswitching” (depolarization) occurs increases with temperature indicating increasing stability of the disordered regime. The disordered phase can be de-stabilized by substituting Nd for La at the A1-site and which reintroduces “normal” ferroelectric behavior. | |
dc.format.extent | 12 | |
dc.format.extent | 2235769 | |
dc.language.iso | eng | |
dc.relation.ispartof | Chemistry of Materials | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject | BDC | en |
dc.subject.lcc | QD | en |
dc.title | Relaxor-to-ferroelectric crossover and disruption of polar order in "empty" tetragonal tungsten bronzes | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1021/acs.chemmater.6b01306 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2017-07-12 |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.