NMR and Mossbauer studies of core–shell FeCo@C ferromagnetic nanoparticles near the superparamagnetic transition
A. Y. Germov
1
,
Oleg A Prokopyev
1
,
Aleksandr Konev
1
,
M.A. Uimin
1
,
A.S. Minin
1, 2
,
A.Y. Yermakov
1, 2
,
I.A. Kurmachev
1
,
Ye.V. Suvorkova
1
Publication type: Journal Article
Publication date: 2023-12-01
scimago Q2
wos Q2
SJR: 0.521
CiteScore: 5.1
Impact factor: 3.0
ISSN: 03048853, 18734766
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
A series of nanoparticles of the bimetallic core and carbon shell type FexCo1-x@C (x = 0.4 – 0.8) have been obtained by the gas condensation synthesis method. The microstructural peculiarities and magnetic behaviour of the nanoparticles is analysed depending on the composition and thermal treatment. Collateral phases, which are difficult to detect by traditional methods, are identified. The 59Co,57Fe NMR and 57Fe Mossbauer spectroscopies have shown that homogeneity of the composition and removal of carbon from the metallic core can be reached by annealing. The combination of methods has quantified the fraction of superparamagnetic particles, the proportion of paramagnetic inclusions. A simplified visual interpretation of the 59Co NMR spectra is proposed for binary FeCo alloys.
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Germov A. Y. et al. NMR and Mossbauer studies of core–shell FeCo@C ferromagnetic nanoparticles near the superparamagnetic transition // Journal of Magnetism and Magnetic Materials. 2023. Vol. 588. p. 171391.
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Germov A. Y., Prokopyev O. A., Konev A., Uimin M., Minin A., Yermakov A., Goloborodskiy B. Yu., Kurmachev I., Suvorkova Y. NMR and Mossbauer studies of core–shell FeCo@C ferromagnetic nanoparticles near the superparamagnetic transition // Journal of Magnetism and Magnetic Materials. 2023. Vol. 588. p. 171391.
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TY - JOUR
DO - 10.1016/j.jmmm.2023.171391
UR - https://doi.org/10.1016/j.jmmm.2023.171391
TI - NMR and Mossbauer studies of core–shell FeCo@C ferromagnetic nanoparticles near the superparamagnetic transition
T2 - Journal of Magnetism and Magnetic Materials
AU - Germov, A. Y.
AU - Prokopyev, Oleg A
AU - Konev, Aleksandr
AU - Uimin, M.A.
AU - Minin, A.S.
AU - Yermakov, A.Y.
AU - Goloborodskiy, Boris Yu
AU - Kurmachev, I.A.
AU - Suvorkova, Ye.V.
PY - 2023
DA - 2023/12/01
PB - Elsevier
SP - 171391
VL - 588
SN - 0304-8853
SN - 1873-4766
ER -
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BibTex (up to 50 authors)
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@article{2023_Germov,
author = {A. Y. Germov and Oleg A Prokopyev and Aleksandr Konev and M.A. Uimin and A.S. Minin and A.Y. Yermakov and Boris Yu Goloborodskiy and I.A. Kurmachev and Ye.V. Suvorkova},
title = {NMR and Mossbauer studies of core–shell FeCo@C ferromagnetic nanoparticles near the superparamagnetic transition},
journal = {Journal of Magnetism and Magnetic Materials},
year = {2023},
volume = {588},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016/j.jmmm.2023.171391},
pages = {171391},
doi = {10.1016/j.jmmm.2023.171391}
}