Open Access
High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites
Alexander Omelyanchik
1, 2
,
G. Varvaro
3
,
Federico Locardi
1
,
F. Canepa
1
,
Petr Chernavsky
6
,
Nikolai Perov
7
,
Davide Peddis
1, 3
5
Publication type: Journal Article
Publication date: 2022-02-11
scimago Q2
wos Q2
SJR: 0.521
CiteScore: 5.5
Impact factor: 2.5
ISSN: 20763417
Computer Science Applications
Process Chemistry and Technology
General Materials Science
Instrumentation
General Engineering
Fluid Flow and Transfer Processes
Abstract
Cobalt ferrite nanoparticles of different stoichiometries synthesized by a sol–gel autocombustion method were used as a starting material to obtain high-moment Fe50Co50 and Fe66Co34 metal nanoparticles by topochemical hydrogen reduction. Structural and magnetic investigations confirmed the formation of FeCo nanoparticles with crystallite sizes of about 30 nm and magnetization at 0.5 T of ~265 Am2/kg (0 K), which was larger than the expected bulk value, likely because of the incorporation in the body-centered cubic (bcc) FeCo structure of the residual C atoms present on the surface of the oxide particles. Temperature-dependent magnetization measurements in the H2 atmosphere were also performed to investigate in detail the reduction mechanism and the effect of an external magnetic field on the process efficiency.
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10
Total citations:
10
Citations from 2024:
3
(30%)
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GOST
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Omelyanchik A. et al. High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites // Applied Sciences (Switzerland). 2022. Vol. 12. No. 4. p. 1899.
GOST all authors (up to 50)
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Omelyanchik A., Varvaro G., Maltoni P., Rodionova V., Murillo J. P. M., Locardi F., Ferretti M., Sangregorio C., Canepa F., Chernavsky P., Perov N., Peddis D. High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites // Applied Sciences (Switzerland). 2022. Vol. 12. No. 4. p. 1899.
Cite this
RIS
Copy
TY - JOUR
DO - 10.3390/app12041899
UR - https://www.mdpi.com/2076-3417/12/4/1899
TI - High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites
T2 - Applied Sciences (Switzerland)
AU - Omelyanchik, Alexander
AU - Varvaro, G.
AU - Maltoni, Pierfrancesco
AU - Rodionova, Valeria
AU - Murillo, Jean Pierre Miranda
AU - Locardi, Federico
AU - Ferretti, Maurizio
AU - Sangregorio, Claudio
AU - Canepa, F.
AU - Chernavsky, Petr
AU - Perov, Nikolai
AU - Peddis, Davide
PY - 2022
DA - 2022/02/11
PB - MDPI
SP - 1899
IS - 4
VL - 12
SN - 2076-3417
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2022_Omelyanchik,
author = {Alexander Omelyanchik and G. Varvaro and Pierfrancesco Maltoni and Valeria Rodionova and Jean Pierre Miranda Murillo and Federico Locardi and Maurizio Ferretti and Claudio Sangregorio and F. Canepa and Petr Chernavsky and Nikolai Perov and Davide Peddis},
title = {High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites},
journal = {Applied Sciences (Switzerland)},
year = {2022},
volume = {12},
publisher = {MDPI},
month = {feb},
url = {https://www.mdpi.com/2076-3417/12/4/1899},
number = {4},
pages = {1899},
doi = {10.3390/app12041899}
}
Cite this
MLA
Copy
Omelyanchik, Alexander, et al. “High-Moment FeCo Magnetic Nanoparticles Obtained by Topochemical H2 Reduction of Co-Ferrites.” Applied Sciences (Switzerland), vol. 12, no. 4, Feb. 2022, p. 1899. https://www.mdpi.com/2076-3417/12/4/1899.