Výsledky vyhledávání - "W A A, Macedo"

Akademický článek

Chemical order and magnetic anisotropy in alternate Fe/Co monolayers on Cu3Au(001)

Autor: A. S. Ponce, S. O. Parreiras, A. A. C. Cotta, G. F. M. Gomes, P. Schio, J. C. Cezar, R. Paniago, P. L. Gastelois, W. A. A. Macedo

Publikováno v: AIP Advances, Vol 8, Iss 11, Pp 115307-115307-9 (2018)

In this work, we have investigated the magnetic anisotropy of Fe/Co layers epitaxially grown on Cu3Au(001). The ordered Fe/Co thin films were prepared by deposition of alternated monolayers of Fe and Co. The stoichiometry, structure, morphology and m

Externí odkaz: https://doaj.org/article/9f4a8a280b314da8bc08b4a60a03bbc3

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ZnO thin films design: the role of precursor molarity in the spray pyrolysis process

Autor: W. A. A. Macedo, L. K. S. de Herval, Alexandre A. C. Cotta, Y.J. Onofre, M. P. F. de Godoy

Publikováno v: Journal of Materials Science: Materials in Electronics. 31:17269-17280

Many investigations employ oxides grown by spray pyrolysis whose desired features depend on the synthesis parameters. This paper reports the influence of precursor dilution on the structural, morphological, and optical properties of ZnO films. For th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b43108e6cfaa0b11b7c1890a5d5dec3e
https://doi.org/10.1007/s10854-020-04281-y

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Tailoring magnetocrystalline perpendicular anisotropy in Co60Fe40/Pt multilayers

Autor: A.M. Fortini, M. D. Martins, W. A. A. Macedo, W.G. Schmidt, L. E. Fernandez-Outon

Publikováno v: Journal of Magnetism and Magnetic Materials. 467:139-144

We report on the investigation of perpendicular magnetic anisotropy in magnetron sputtered Pt/[Co60Fe40/Pt]5 multilayers, and the behaviour of the anisotropy field as function of the growth rate of the Pt buffer layer (4 nm thick). Highly crystallize

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::924e4e94858ae8a1238b03866fe59181
https://doi.org/10.1016/j.jmmm.2018.07.068

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Tailoring the physical and chemical properties of Sn

Autor: F F H, Aragón, L, Villegas-Lelovsky, L, Cabral, M P, Lima, J C R, Aquino, M C, Mathpal, J A H, Coaquira, S W, da Silva, L C C M, Nagamine, S O, Parreiras, P L, Gastelois, G E, Marques, W A A, Macedo

Publikováno v: Physical chemistry chemical physics : PCCP. 22(6)

In this work, we present a coupled experimental and theoretical first-principles investigation on one of the more promising oxide-diluted magnetic semiconductors, the Sn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d8d68fbc3a73ce48b641283ea439aba0
https://pubmed.ncbi.nlm.nih.gov/32003381

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BNNT/Fe3O4 System as an Efficient Tool for Magnetohyperthermia Therapy

Autor: Jerusa Araújo Quintão Arantes Faria, I. J. Gonzalez, L. E. F. Outon, W. A. A. Macedo, Tiago Hilário Ferreira, Dawidson Assis Gomes, Edésia Martins Barros de Sousa

Publikováno v: Journal of Nanoscience and Nanotechnology. 18:6746-6755

Nanostructured materials have been widely studied aiming to biomedical applications, primarily for the purpose of carrying drugs or molecules of interest in a selected tissue or organ. In this context, boron nitride nanotubes (BNNTs), when functional

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f3734802a68b24a781963449d5768d0
https://doi.org/10.1166/jnn.2018.15514

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Synthesis and characterization of nanocomposites consisting of polyaniline, chitosan and tin dioxide

Autor: S. Correa, J.C. Ugucioni, José D. Ardisson, A.L.C. Silva, A.D.B. Brito, J.P. Silva, Alexandre A. C. Cotta, W. A. A. Macedo

Publikováno v: Materials Chemistry and Physics. 216:402-412

Polymeric nanocomposites composed of polyaniline (PANI)/tin dioxide (SnO2), and PANI/chitosan(CS)/SnO2 were synthesized chemically by in situ polymerization method. The aniline polymerization was carried out using DBSA as protonating agent, and APS a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5fb7703ec63aede8ac737dc54ecf529
https://doi.org/10.1016/j.matchemphys.2018.06.025

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Depth-dependent ferromagnetic spin structure and asymmetric magnetization reversal in exchange-biased Fe/FeMn bilayers

Autor: W. A. A. Macedo, M.S. Araújo Filho, J.D. Ardisson, L. E. Fernandez-Outon

Publikováno v: Journal of Magnetism and Magnetic Materials. 504:166657

Depth-dependent spin rotation of the Fe spins upon magnetisation reversal of the ferromagnetic layer in polycrystalline Fe/FeMn exchange-biased bilayers was investigated by using 57Fe probe layers and angular hysteresis loops constructed from in-fiel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::16d7a115f79b51a44d8bd9f6a0dd8ea0
https://doi.org/10.1016/j.jmmm.2020.166657

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