Surface Effects and Magnetic Ordering in Few-Nanometer-Sized ε-Fe2O3 Particles Full article
| Journal |
Journal of Applied Physics
ISSN: 0021-8979 , E-ISSN: 1089-7550 |
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| Output data | Year: 2013, Volume: 114, Pages: 163911 Pages count : 5 DOI: 10.1063/1.4827839 | ||||
| Tags | Ferrimagnetism; Magnetic moments; Silica gel; Superparamagnetism | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | 45 |
| 2 | Президиум РАН | 24.40 |
Abstract:
The magnetic properties of ε-Fe2O3 nanoparticles with an average size of 3.4 nm in a silica gel matrix are investigated using Mössbauer technique, electron spin resonance, and magnetic measurements. Two magnetic subsystems reveal in magnetic measurements. Paramagnetic subsystem is formed by the Fe(III) ions in the smallest (<3.5 nm) particles' shell, while ferrimagnetic ordering in the “core” of the particles results in superparamagnetic behavior. The superparamagnetic behavior of the investigated samples is observed up to ∼800 K. The magnetic moment of the particles is formed by both the ferrimagnetic ordering characteristic of ε-Fe2O3 and the additional effect of uncompensated sublattices (planes).
Cite:
Balaev D.A.
, Dubrovskiy A.A.
, Shaykhutdinov K.A.
, Bayukov O.A.
, Yakushkin S.S.
, Bukhtiyarova G.A.
, Martyanov O.N.
Surface Effects and Magnetic Ordering in Few-Nanometer-Sized ε-Fe2O3 Particles
Journal of Applied Physics. 2013. V.114. P.163911. DOI: 10.1063/1.4827839 WOS Scopus РИНЦ ANCAN OpenAlex
Surface Effects and Magnetic Ordering in Few-Nanometer-Sized ε-Fe2O3 Particles
Journal of Applied Physics. 2013. V.114. P.163911. DOI: 10.1063/1.4827839 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Sep 30, 2013 |
| Accepted: | Oct 14, 2013 |
| Published print: | Oct 28, 2013 |
| Published online: | Oct 30, 2013 |
Identifiers:
| Web of science: | WOS:000326639200066 |
| Scopus: | 2-s2.0-84887286086 |
| Elibrary: | 21888332 |
| Chemical Abstracts: | 2015:269019 |
| Chemical Abstracts (print): | 162:346335 |
| OpenAlex: | W1967190997 |