Formation Conditions of a Magnetically Ordered Phase ɛ-Fe2O3. A FMR in situ Study
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Journal of Structural Chemistry
ISSN: 0022-4766
, E-ISSN: 1573-8779
|
| Output data |
Year: 2013,
Volume: 54,
Number: 5,
Pages: 876-882
Pages count
: 7
DOI:
10.1134/s0022476613050065
|
| Tags |
ferromagnetic resonance, heterogeneous catalysts, in situ, supermagnetic nanoparticles |
| Authors |
Yakushkin S.S.
1
,
Bukhtiyarova G.A.
1
,
Martyanov O.N.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
|
Funding (2)
|
1
|
The Ministry of Education and Science of the Russian Federation
|
8429
|
|
2
|
Президиум РАН
|
27.46
|
The ferromagnetic resonance (FMR) method in situ is used to study the initial stages of the formation of ε
iron oxide nanoparticles deposited on silica gel at temperatures up to 600°C. It is shown that at hightemperature
treatment of starting samples obtained by impregnation with an iron(II) sulfate solution,
supermagnetic ε-Fe2O3/SiO2 nanoparticles form with a narrow size distribution. An analysis of the FMR
data in comparison with the data of other methods enables the formulation of the formation conditions for
systems of deposited ε-Fe2O3 nanoparticles without other polymorph impurities.