Exsolution of Nickel Nanoparticles from Mixed-Valence Metal Oxides: A Quantitative Evaluation by Magnetic Measurements

Victor B. Tinti, Debora Marani, Andre S. Ferlauto, Fabio Coral Fonseca, Vincenzo Esposito, Daniel Zanetti De Florio*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
Article number1900472
JournalParticle & Particle Systems Characterization
Number of pages7
ISSN0934-0866
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • Exsolution
  • Magnetic measurements
  • Nanoparticles

Cite this

Tinti, Victor B. ; Marani, Debora ; Ferlauto, Andre S. ; Fonseca, Fabio Coral ; Esposito, Vincenzo ; Zanetti De Florio, Daniel. / Exsolution of Nickel Nanoparticles from Mixed-Valence Metal Oxides: A Quantitative Evaluation by Magnetic Measurements. In: Particle & Particle Systems Characterization. 2020.
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abstract = "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.",
keywords = "Exsolution, Magnetic measurements, Nanoparticles",
author = "Tinti, {Victor B.} and Debora Marani and Ferlauto, {Andre S.} and Fonseca, {Fabio Coral} and Vincenzo Esposito and {Zanetti De Florio}, Daniel",
year = "2020",
doi = "10.1002/ppsc.201900472",
language = "English",
journal = "Particle & Particle Systems Characterization",
issn = "0934-0866",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",

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Exsolution of Nickel Nanoparticles from Mixed-Valence Metal Oxides: A Quantitative Evaluation by Magnetic Measurements. / Tinti, Victor B.; Marani, Debora; Ferlauto, Andre S.; Fonseca, Fabio Coral ; Esposito, Vincenzo; Zanetti De Florio, Daniel.

In: Particle & Particle Systems Characterization, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Exsolution of Nickel Nanoparticles from Mixed-Valence Metal Oxides: A Quantitative Evaluation by Magnetic Measurements

AU - Tinti, Victor B.

AU - Marani, Debora

AU - Ferlauto, Andre S.

AU - Fonseca, Fabio Coral

AU - Esposito, Vincenzo

AU - Zanetti De Florio, Daniel

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Exsolution

KW - Magnetic measurements

KW - Nanoparticles

U2 - 10.1002/ppsc.201900472

DO - 10.1002/ppsc.201900472

M3 - Journal article

JO - Particle & Particle Systems Characterization

JF - Particle & Particle Systems Characterization

SN - 0934-0866

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ER -