Histerese magnética em sistemas que apresentam anisotropia perpendicular e interação de Dzyaloshinskii-Moriya

Autores

DOI:

https://doi.org/10.5902/2179460X84494

Palavras-chave:

Reversão da magnetização, Interação de Dzyaloshinskii–Moriya interfacial, Histerese magnética, Skyrmions magnéticos

Resumo

Simulações micromagnéticas foram realizadas para estudar o impacto da interação de Dzyaloshinskii–Moriya interfacial (iDMI) nos processos de reversão da magnetização em filmes finos que apresentam anisotropia magnética perpendicular (PMA). Sistemas que apresentam PMA fraca, intermediária e intensa foram explorados. Conforme o parâmetro que caracteriza a intensidade da iDMI aumenta, modificações significativas podem ser observadas nas curvas de histerese magnética, associadas principalmente ao surgimento de domínios magnéticos. Analisando a distribuição espacial da magnetização, verifica-se que a formação de paredes de domínio do tipo Néel e de skyrmions magnéticos é favorecida pela iDMI.

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Biografia do Autor

Heloísa Suffert Acosta, Universidade Federal do Rio Grande do Sul

Aluna de mestrado, Instituto de Física

Bruno Monteiro Figueiró, Universidade Federal de Santa Maria

Mestre em Física

Artur Harres de Oliveira, Universidade Federal de Santa Maria

Doutorado em Física pela Universidade Federal do Rio Grande do Sul(2014).

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Publicado

2024-12-13