TINTI, VICTOR B.MARANI, DEBORAFERLAUTO, ANDRE SFONSECA, FABIO C.ESPOSITO, VINCENZOFLORIO, DANIEL Z. de2020-04-062020-04-062020TINTI, 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. <b>Particle and Particle Systems Characterization</b>, v. 37, n. 2, p. 1900472-1 - 1900472-7, 2020. DOI: <a href="https://dx.doi.org/10.1002/ppsc.201900472">10.1002/ppsc.201900472</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31085.0934-0866http://repositorio.ipen.br/handle/123456789/31085A 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.1900472-1 - 1900472-7closedAccessnanoparticlesnickelmagnetic fieldsmagnetometersvalenceevaluationferromagnetic materialsArtigo de periódico23710.1002/ppsc.2019004720000-0003-0708-2021https://orcid.org/0000-0003-0708-202145.8878.33