Please use this identifier to cite or link to this item: https://repositorio.ufrn.br/handle/123456789/44988
Title: Multifractality in domain wall dynamics of a ferromagnetic film
Authors: Lima, Gustavo Zampier dos Santos
Corrêa, Marcio Assolin
Sommer, Rubem Luis
Bohn, Felipe
Keywords: Propriedades multifractais;Dinâmica das paredes de domínio
Issue Date: 27-Dec-2012
Publisher: American Physical Society
Citation: LIMA, Gustavo Zampier dos Santos; CORREA, Marcio Assolin; SOMMER, Rubem Luis; BOHN, Felipe. Multifractality in domain wall dynamics of a ferromagnetic film. Physical Review e, [s.l.], v. 86, n. 6, p. 0661171-0661177, 27 dez. 2012. American Physical Society (APS). Disponível em: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.86.066117. Acesso em 24 mai. 2020. DOI: 10.1103/PhysRevE.86.066117
Portuguese Abstract: We investigate the multifractal properties in the dynamics of domain walls of a ferromagnetic film. We apply the Multifractal Detrended Fluctuation Analysis method in experimental Barkhausen noise time series measured in a 1000-nm-thick Permalloy film under different drivingmagnetic field frequencies, and calculate the fluctuation function Fq (s), generalized Hurst exponent h(q), multifractal scaling exponent τ (q), and the multifractal spectrum f (α). Based on this procedure, we provide experimental evidence of multifractality in the dynamics of domain walls in ferromagnetic films and identify a rich and strong multifractal behavior, revealed by the changes of the scaling properties of over the entire Barkhausen noise signal, independently of the driving magnetic field rate employed in the experiment
Abstract: We investigate the multifractal properties in the dynamics of domain walls of a ferromagnetic film. We apply the Multifractal Detrended Fluctuation Analysis method in experimental Barkhausen noise time series measured in a 1000-nm-thick Permalloy film under different drivingmagnetic field frequencies, and calculate the fluctuation function Fq (s), generalized Hurst exponent h(q), multifractal scaling exponent τ (q), and the multifractal spectrum f (α). Based on this procedure, we provide experimental evidence of multifractality in the dynamics of domain walls in ferromagnetic films and identify a rich and strong multifractal behavior, revealed by the changes of the scaling properties of over the entire Barkhausen noise signal, independently of the driving magnetic field rate employed in the experiment
URI: https://repositorio.ufrn.br/handle/123456789/44988
ISSN: 2470-0053
Appears in Collections:CCET - DFTE - Artigos publicados em periódicos

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