Please use this identifier to cite or link to this item: https://repositorio.ufrn.br/handle/123456789/44994
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dc.contributor.authorBohn, Felipe-
dc.contributor.authorCorrêa, Marcio Assolin-
dc.contributor.authorViegas, Alexandre da Cas-
dc.contributor.authorPapanikolaou, Stefanos-
dc.contributor.authorDurin, Gianfranco-
dc.contributor.authorSommer, Rubem Luis-
dc.date.accessioned2021-11-23T16:33:33Z-
dc.date.available2021-11-23T16:33:33Z-
dc.date.issued2013-09-23-
dc.identifier.citationBOHN, Felipe; CORREA, Marcio Assolin; VIEGAS, Alexandre da Cas; PAPANIKOLAOU, Stefanos; DURIN, Gianfranco; SOMMER, Rubem Luis. Universal properties of magnetization dynamics in polycrystalline ferromagnetic films. Physical Review e, [s.l.], v. 88, n. 3, p. 0328111-0328118, 23 set. 2013. American Physical Society (APS). Disponível em: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.88.032811. Acesso em: 24 mai. 2020. DOI: https://doi.org/10.1103/PhysRevE.88.032811pt_BR
dc.identifier.issn2470-0053-
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/44994-
dc.description.abstractWe investigate the scaling behavior in the statistical properties of Barkhausen noise in ferromagnetic films. We apply the statistical treatment usually employed for bulk materials in experimental Barkhausen noise time series measured with the traditional inductive technique in polycrystalline ferromagnetic films having different thickness from 100 to 1000 nm and determine the scaling exponents. Based on this procedure, we group the samples in a single universality class, since the scaling behavior of Barkhausen avalanches is characterized by exponents τ ∼ 1.5, α ∼ 2.0, and 1/σ νz ∼ ϑ ∼ 2.0 for all the films. We interpret these results in terms of theoretical models and provide experimental evidence that a well-known mean-field model for the dynamics of a ferromagnetic domainwall in three-dimensional ferromagnets can be extended for films.We identify that the films present an universal three-dimensional magnetization dynamics, governed by long-range dipolar interactions, even at the smallest thicknesses, indicating that the two-dimensional magnetic behavior commonly verified for films cannot be generalized for all thickness rangespt_BR
dc.languageenpt_BR
dc.publisherAmerican Physical Societypt_BR
dc.subjectNão possui palavras-chaves.pt_BR
dc.titleUniversal properties of magnetization dynamics in polycrystalline ferromagnetic filmspt_BR
dc.typearticlept_BR
dc.description.resumoWe investigate the scaling behavior in the statistical properties of Barkhausen noise in ferromagnetic films. We apply the statistical treatment usually employed for bulk materials in experimental Barkhausen noise time series measured with the traditional inductive technique in polycrystalline ferromagnetic films having different thickness from 100 to 1000 nm and determine the scaling exponents. Based on this procedure, we group the samples in a single universality class, since the scaling behavior of Barkhausen avalanches is characterized by exponents τ ∼ 1.5, α ∼ 2.0, and 1/σ νz ∼ ϑ ∼ 2.0 for all the films. We interpret these results in terms of theoretical models and provide experimental evidence that a well-known mean-field model for the dynamics of a ferromagnetic domainwall in three-dimensional ferromagnets can be extended for films.We identify that the films present an universal three-dimensional magnetization dynamics, governed by long-range dipolar interactions, even at the smallest thicknesses, indicating that the two-dimensional magnetic behavior commonly verified for films cannot be generalized for all thickness rangespt_BR
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