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Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo

Nanosized particles of Mn1-xZnxFe2O4, where 0 ≤ x ≤ 1, and MnAlxFe2-xO4, where 0 ≤ x ≤ 2, were synthesized by the sol–gel combustion method and the magnetic properties of t h e s e compounds were investigated and compared. The saturation magnetization of the samples of Mn1-xZnxFe2O4 was taken from t...

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Main Authors: Biasi, R S de, Torquato, M, Carvalho, D G, Grillo, M L N, Figueiredo, A B S
Format: Online
Language: por
Published: Instituto Militar de Engenharia (IME) 2021
Online Access: http://ebrevistas.eb.mil.br/CT/article/view/8636
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spelling oai:meiramattos.eceme.ensino.eb.br:article86362021-10-31T18:50:26Z Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo Biasi, R S de Torquato, M Carvalho, D G Grillo, M L N Figueiredo, A B S Nanosized particles of Mn1-xZnxFe2O4, where 0 ≤ x ≤ 1, and MnAlxFe2-xO4, where 0 ≤ x ≤ 2, were synthesized by the sol–gel combustion method and the magnetic properties of t h e s e compounds were investigated and compared. The saturation magnetization of the samples of Mn1-xZnxFe2O4 was taken from the literature and the saturation magnetization of the samples of MnAlxFe2-xO4 was estimated from the cation distribution; ferromagnetic resonance spectra were used to determine the magnetocrystalline anisotropy. The results show that the saturation magnetization and the magnetocrystalline anisotropy of the mixed ferrites MnZnFeO4 and MnAlFeO4 vary over a wide range with Zn and Al concentrations, a result that could be useful for practical applications of these materials. Partículas nanométricas de Mn1-xZnxFe2O4, em que 0 ≤ x ≤ 1, e MnAlxFe2-xO4, em que 0 ≤ x ≤ 2, foram sintetizadas pelo método sol-gel/combustão e as propriedades magnéticas desses compostos foram investigadas e comparadas. A magnetização de saturação das amostras de Mn1-xZnxFe2O4 foi obtida na literatura e a magnetização de saturação das amostras de MnAlxFe2-xO4 foi estimada a partir da distribuição catiônica; espectros de ressonância ferromagnética foram usados para determinar a anisotropia magnetocristalina. Os resultados mostraram que a magnetização de saturação e a anisotropia magnetocristalina das ferritas mistas MnZnFeO4 e MnAlFeO4 variam muito com as concentrações de Zn e Al, respectivamente, um resultado que pode ser útil para aplicações práticas desses materiais. Instituto Militar de Engenharia (IME) 2021-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo Avaliado pelos Pares application/pdf http://ebrevistas.eb.mil.br/CT/article/view/8636 Revista Militar de Ciência e Tecnologia; Vol. 38 No. 1 (2021): Revista Militar de Ciência e Tecnologia ; 54-60 Revista Militar de Ciência e Tecnologia; Vol. 38 Núm. 1 (2021): Revista Militar de Ciência e Tecnologia ; 54-60 Revista Militar de Ciência e Tecnologia; v. 38 n. 1 (2021): Revista Militar de Ciência e Tecnologia ; 54-60 2316-4522 0102-3543 por http://ebrevistas.eb.mil.br/CT/article/view/8636/7470
institution EBREVISTAS
collection EBREVISTAS
language por
format Online
author Biasi, R S de
Torquato, M
Carvalho, D G
Grillo, M L N
Figueiredo, A B S
spellingShingle Biasi, R S de
Torquato, M
Carvalho, D G
Grillo, M L N
Figueiredo, A B S
Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
author_sort Biasi, R S de
title Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
title_short Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
title_full Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
title_fullStr Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
title_full_unstemmed Propriedades magnéticas de ferritas mistas MnZnFeO₄ e MnAlFeO₄: um estudo comparativo
title_sort propriedades magnéticas de ferritas mistas mnznfeo₄ e mnalfeo₄: um estudo comparativo
description Nanosized particles of Mn1-xZnxFe2O4, where 0 ≤ x ≤ 1, and MnAlxFe2-xO4, where 0 ≤ x ≤ 2, were synthesized by the sol–gel combustion method and the magnetic properties of t h e s e compounds were investigated and compared. The saturation magnetization of the samples of Mn1-xZnxFe2O4 was taken from the literature and the saturation magnetization of the samples of MnAlxFe2-xO4 was estimated from the cation distribution; ferromagnetic resonance spectra were used to determine the magnetocrystalline anisotropy. The results show that the saturation magnetization and the magnetocrystalline anisotropy of the mixed ferrites MnZnFeO4 and MnAlFeO4 vary over a wide range with Zn and Al concentrations, a result that could be useful for practical applications of these materials.
publisher Instituto Militar de Engenharia (IME)
publishDate 2021
url http://ebrevistas.eb.mil.br/CT/article/view/8636
_version_ 1715958178282209280
score 13.657419

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