Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric

Detalhes bibliográficos
Autor(a) principal: Walker, Julian
Data de Publicação: 2016
Outros Autores: Simons, Hugh, Alikin, Denis O., Turygin, Anton P., Shur, Vladimir Y., Kholkin, Andrei L., Ursic, Hana, Bencan, Andreja, Malic, Barbara, Nagarajan, Valanoor, Rojac, Tadej
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/18332
Resumo: Electromechanical properties such as d33 and strain are significantly enhanced at morphotropic phase boundaries (MPBs) between two or more different crystal structures. Many actuators, sensors and MEMS devices are therefore systems with MPBs, usually between polar phases in lead (Pb)-based ferroelectric ceramics. In the search for Pb-free alternatives, systems with MPBs between polar and non-polar phases have recently been theorized as having great promise. While such an MPB was identified in rare-earth (RE) modified bismuth ferrite (BFO) thin films, synthesis challenges have prevented its realization in ceramics. Overcoming these, we demonstrate a comparable electromechanical response to Pb-based materials at the polar-to-non-polar MPB in Sm modified BFO. This arises from ‘dual’ strain mechanisms: ferroelectric/ferroelastic switching and a previously unreported electric-field induced transition of an anti-polar intermediate phase. We show that intermediate phases play an important role in the macroscopic strain response, and may have potential to enhance electromechanical properties at polar-to-non-polar MPBs.
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spelling Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectricElectromechanical properties such as d33 and strain are significantly enhanced at morphotropic phase boundaries (MPBs) between two or more different crystal structures. Many actuators, sensors and MEMS devices are therefore systems with MPBs, usually between polar phases in lead (Pb)-based ferroelectric ceramics. In the search for Pb-free alternatives, systems with MPBs between polar and non-polar phases have recently been theorized as having great promise. While such an MPB was identified in rare-earth (RE) modified bismuth ferrite (BFO) thin films, synthesis challenges have prevented its realization in ceramics. Overcoming these, we demonstrate a comparable electromechanical response to Pb-based materials at the polar-to-non-polar MPB in Sm modified BFO. This arises from ‘dual’ strain mechanisms: ferroelectric/ferroelastic switching and a previously unreported electric-field induced transition of an anti-polar intermediate phase. We show that intermediate phases play an important role in the macroscopic strain response, and may have potential to enhance electromechanical properties at polar-to-non-polar MPBs.Nature Publishing Group2017-09-13T15:25:23Z2016-01-01T00:00:00Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/18332eng2045-232210.1038/srep19630Walker, JulianSimons, HughAlikin, Denis O.Turygin, Anton P.Shur, Vladimir Y.Kholkin, Andrei L.Ursic, HanaBencan, AndrejaMalic, BarbaraNagarajan, ValanoorRojac, Tadejinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:34:36Zoai:ria.ua.pt:10773/18332Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:53:00.822082Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
title Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
spellingShingle Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
Walker, Julian
title_short Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
title_full Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
title_fullStr Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
title_full_unstemmed Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
title_sort Dual strain mechanisms in a lead-free morphotropic phase boundary ferroelectric
author Walker, Julian
author_facet Walker, Julian
Simons, Hugh
Alikin, Denis O.
Turygin, Anton P.
Shur, Vladimir Y.
Kholkin, Andrei L.
Ursic, Hana
Bencan, Andreja
Malic, Barbara
Nagarajan, Valanoor
Rojac, Tadej
author_role author
author2 Simons, Hugh
Alikin, Denis O.
Turygin, Anton P.
Shur, Vladimir Y.
Kholkin, Andrei L.
Ursic, Hana
Bencan, Andreja
Malic, Barbara
Nagarajan, Valanoor
Rojac, Tadej
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Walker, Julian
Simons, Hugh
Alikin, Denis O.
Turygin, Anton P.
Shur, Vladimir Y.
Kholkin, Andrei L.
Ursic, Hana
Bencan, Andreja
Malic, Barbara
Nagarajan, Valanoor
Rojac, Tadej
description Electromechanical properties such as d33 and strain are significantly enhanced at morphotropic phase boundaries (MPBs) between two or more different crystal structures. Many actuators, sensors and MEMS devices are therefore systems with MPBs, usually between polar phases in lead (Pb)-based ferroelectric ceramics. In the search for Pb-free alternatives, systems with MPBs between polar and non-polar phases have recently been theorized as having great promise. While such an MPB was identified in rare-earth (RE) modified bismuth ferrite (BFO) thin films, synthesis challenges have prevented its realization in ceramics. Overcoming these, we demonstrate a comparable electromechanical response to Pb-based materials at the polar-to-non-polar MPB in Sm modified BFO. This arises from ‘dual’ strain mechanisms: ferroelectric/ferroelastic switching and a previously unreported electric-field induced transition of an anti-polar intermediate phase. We show that intermediate phases play an important role in the macroscopic strain response, and may have potential to enhance electromechanical properties at polar-to-non-polar MPBs.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-01T00:00:00Z
2016
2017-09-13T15:25:23Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/18332
url http://hdl.handle.net/10773/18332
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2045-2322
10.1038/srep19630
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dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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