Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7 C3 Carbide in Core–Shell Nanostructures
A.O. BASKAKOV
1
,
S S Starchikov
1
,
I S Lyubutin
1
,
YU.L. OGARKOVA
1
,
V A Davydov
2
,
L F Kulikova
2
,
T B Egorova
3
,
V N Agafonov
4
,
1
Publication type: Journal Article
Publication date: 2019-03-01
scimago Q4
wos Q4
SJR: 0.145
CiteScore: 0.8
Impact factor: 0.5
ISSN: 10637745, 1562689X
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
The structure and magnetic properties of iron carbide nanoparticles encapsulated into carbon shells, obtained as a result of ferrocene transformations at a pressure of 8 GPa and different temperatures, have been investigated by powder X-ray diffraction, transmission electron microscopy, and Mössbauer spectroscopy. It is found that the main crystalline carbide states are hexagonal phase Fe7C3 and cementite Fe3C, whose relative contents are determined by the treatment temperature. Mössbauer spectroscopy was used to identify three nonequivalent states of iron atoms in the structural sites of Fe7C3 hexagonal lattice. It is established that the occupancies of these sites differ from the known values for the bulk material, which is related to the specific features of structure formation under conditions of high pressure and temperature.
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BASKAKOV A. et al. Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7C3 Carbide in Core–Shell Nanostructures // Crystallography Reports. 2019. Vol. 64. No. 2. pp. 331-336.
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BASKAKOV A., Starchikov S. S., Lyubutin I. S., OGARKOVA Y., Davydov V. A., Kulikova L. F., Egorova T. B., Agafonov V. N., Starchikova I. Yu. Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7C3 Carbide in Core–Shell Nanostructures // Crystallography Reports. 2019. Vol. 64. No. 2. pp. 331-336.
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TY - JOUR
DO - 10.1134/S1063774519020056
UR - https://doi.org/10.1134/S1063774519020056
TI - Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7C3 Carbide in Core–Shell Nanostructures
T2 - Crystallography Reports
AU - BASKAKOV, A.O.
AU - Starchikov, S S
AU - Lyubutin, I S
AU - OGARKOVA, YU.L.
AU - Davydov, V A
AU - Kulikova, L F
AU - Egorova, T B
AU - Agafonov, V N
AU - Starchikova, I Yu
PY - 2019
DA - 2019/03/01
PB - Pleiades Publishing
SP - 331-336
IS - 2
VL - 64
SN - 1063-7745
SN - 1562-689X
ER -
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@article{2019_BASKAKOV,
author = {A.O. BASKAKOV and S S Starchikov and I S Lyubutin and YU.L. OGARKOVA and V A Davydov and L F Kulikova and T B Egorova and V N Agafonov and I Yu Starchikova},
title = {Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7C3 Carbide in Core–Shell Nanostructures},
journal = {Crystallography Reports},
year = {2019},
volume = {64},
publisher = {Pleiades Publishing},
month = {mar},
url = {https://doi.org/10.1134/S1063774519020056},
number = {2},
pages = {331--336},
doi = {10.1134/S1063774519020056}
}
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BASKAKOV, A.O., et al. “Distribution of Iron Atoms in Nonequivalent Crystallographic Sites of Fe7C3 Carbide in Core–Shell Nanostructures.” Crystallography Reports, vol. 64, no. 2, Mar. 2019, pp. 331-336. https://doi.org/10.1134/S1063774519020056.