A comparative study of the polarization degradation mechanisms during electric cycling in (Bi1/2Na1/2)TiO3-based relaxors

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dc.contributor.author Fan, Zhongming
dc.contributor.department Materials Science and Engineering
dc.date.accessioned 2021-12-09T16:42:53Z
dc.date.available 2021-12-09T16:42:53Z
dc.date.issued 2020-03-15
dc.description.abstract The polarization degradation during electric field cycling in a ferroelectric ceramic is closely related to the phase composition. In the present work, electric biasing in-situ transmission electron microscopy (TEM) fatigue tests are conducted on relaxors of (1–x)(Bi1/2Na1/2)TiO3–xSrTiO3. It is directly observed that the ceramic of x = 0.25 features an irreversible relaxor-ferroelectric phase transition and the domain walls in the metastable ferroelectric phase sweep shorter and shorter distances during cycling. In contrast, the ceramic of x = 0.27 features a reversible relaxor-ferroelectric transition and the domain walls in the transient ferroelectric phase remain highly mobile even after 104 cycles.
dc.description.comments This is a manuscript of an article published as Fan, Zhongming, and Xiaoli Tan. "A comparative study of the polarization degradation mechanisms during electric cycling in (Bi1/2Na1/2) TiO3-based relaxors." Scripta Materialia 178 (2020): 334-338. DOI: 10.1016/j.scriptamat.2019.11.061. CC BY-NC-ND. Copyright 2019 Acta Materialia Inc. Posted with permission.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/Qr9mA2Vr
dc.language.iso en_US
dc.publisher Elsevier Ltd.
dc.source.uri https://doi.org/10.1016/j.scriptamat.2019.11.061 *
dc.subject In-situ TEM
dc.subject Electric fatigue
dc.subject Ferroelectric domains
dc.subject Relaxor-ferroelectric transition
dc.subject.disciplines DegreeDisciplines::Engineering::Materials Science and Engineering::Ceramic Materials
dc.title A comparative study of the polarization degradation mechanisms during electric cycling in (Bi1/2Na1/2)TiO3-based relaxors
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication 62adb010-61c7-4fc2-a651-d8b152a926a9
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
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