Exsolution of nickel nanoparticles from mixed-valence metal oxides
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2020
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Particle and Particle Systems Characterization
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Resumo
A fast and accurate experimental method is demonstrated to assess the
fraction of exsolved metallic nanoparticles using magnetic measurements.
As a benchmark, nanometric metallic nickel exsolved from (La1−xSrx)(Cr1−yNiy)
O3−δ is used for its high relevance as a solid oxide fuel cell component. The
method is based on the difference in the magnetic response of the exsolved
metallic nickel (ferromagnetic) and Sr-doped lanthanum chromite ceramic
matrix (paramagnetic). The exsolved nickel results in coherent nanoparticles
pinned on the surface of the Sr-doped lanthanum chromite ceramic matrix, as
evidenced by electron microscopy analyses. The results obtained indicate the
procedure as a fast and sensitive method to study the exsolution of ferromagnetic
nanoparticles.
Como referenciar
TINTI, VICTOR B.; MARANI, DEBORA; FERLAUTO, ANDRE S; FONSECA, FABIO C.; ESPOSITO, VINCENZO; FLORIO, DANIEL Z. de. Exsolution of nickel nanoparticles from mixed-valence metal oxides: a quantitative evaluation by magnetic measurements. Particle and Particle Systems Characterization, v. 37, n. 2, p. 1900472-1 - 1900472-7, 2020. DOI: 10.1002/ppsc.201900472. Disponível em: http://repositorio.ipen.br/handle/123456789/31085. Acesso em: 25 Apr 2024.
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.