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Magnetic characteristics of MgFe2O4 nanoparticles obtained by glycine–nitrate synthesis
The magnetic properties of magnesium–iron spinel (MgFe 2 O 4 ) powdered nanoparticles obtained by glycine–nitrate synthesis are investigated by X-ray phase analysis and the NMR method. According to the results of X-ray phase analysis, the average size of the crystalline part of nanoparticles of the...
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Published in: | Technical physics 2016-02, Vol.61 (2), p.302-305 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The magnetic properties of magnesium–iron spinel (MgFe
2
O
4
) powdered nanoparticles obtained by glycine–nitrate synthesis are investigated by X-ray phase analysis and the NMR method. According to the results of X-ray phase analysis, the average size of the crystalline part of nanoparticles of the powder under investigation is 45 ± 4 nm. Magnetization
J
is determined using the formula
J
= (
B
/μ0)–
H
, where
B
and
H
are the induction and strength of the magnetic field in the sample, which are measured by the NMR method. The magnetic characteristics of MgFe
2
O
4
are as follows: specific saturation magnetization
J
sat
= 17.52 A m
2
/kg, specific residual magnetization
J
r
= 5.73 A m2/kg, coercive force
H
c
= 4600 A/m, and magnetic moment
P
sat
= 371 × 10
–20
A m
2
in the magnetic saturation state and
P
r
= 121 × 10
–20
A m
2
in the residual magnetization state. |
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ISSN: | 1063-7842 1090-6525 |
DOI: | 10.1134/S1063784216020274 |