Development of flexible magnetic films by the incorporation of Ni/Ni3C nanoparticles in a matrix of Amazonian tannic extract (Myrcia atramentifera)
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2024
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BRAZIL MRS MEETING, 22nd
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The development of nanostructured magnetic materials based on Ni and its compounds
(Ni/Ni3C) has been the objective of scientific research due to the versatility of applications
that these materials. In this context, magnetic films can be applied in a variety of
technologies such as data storage, flexible spintronics, chemical detection, and magnetic
sensors.[1] Additionally, the growing prospect of obtaining environmentally eco-friendly
materials has promoted the use of vegetable matrices for film synthesis, such as tannins, for
example. In this work, we report the fabrication of flexible magnetic films on paper
substrates by adding Ni/Ni3C nanoparticles to the tannin extract matrix of the Amazonian
species Myrcea atramentífera.[2] The tannin extract solution was obtained by processing
the species' bark through grinding, sieving, and water extraction for 8 hours at 70°C,
followed by filtration and concentration. After this step, a tannin extract suspension
containing 0.1% Ni/Ni3C was prepared by dispersion in an ultrasonic processor. The
suspension was dispersed onto a paper substrate and dried at 30 °C for 10 minutes. The
films were characterized by XRD, SEM, AFM, and TGA/DSC measurements. The structural
and morphological results indicate the formation of continuous films with dispersed
nanoparticles. Thermal analysis results suggest that the nanoparticles dispersed in the films
maintain structural stability up to 350 °C. The films present macroscopic magnetic response
at room temperature, which can be attributed to the presence of nanoparticles with a
coercive field of 100 Oe and saturation magnetization of 26 emu/g. [3]
Como referenciar
SILVA, CRYSTIAN W.C. da; SOUZA, KATIUSSE S. de; SILVA, BARBARA P.G.; FREITAS, RAFAEL S. de; LAZAR, DOLORES R.R.; PASCA, GABRIEL A.C.; CARBONARI, ARTUR W.; OTUBO, LARISSA. Development of flexible magnetic films by the incorporation of Ni/Ni3C nanoparticles in a matrix of Amazonian tannic extract (Myrcia atramentifera). In: BRAZIL MRS MEETING, 22nd, September 29 - October 3, 2024, Santos, SP. Abstract... São Carlos, SP: Aptor Software, 2024. p. 910-910. Disponível em: https://repositorio.ipen.br/handle/123456789/48939. Acesso em: 31 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.