Magnetic Nanoparticles in Borate Glasses: Identification and Sizing Full article
Conference |
14th International Conference on Optimization of Electrical and Electronic Equipment 22-24 May 2014 , Brasov |
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Source | 2014 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM) Compilation, Institute of Electrical and Electronics Engineers. 2014. ISBN 9781479951833. |
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Output data | Year: 2014, Pages: 95-104 Pages count : 10 DOI: 10.1109/OPTIM.2014.6850939 | ||||||||||||
Authors |
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Affiliations |
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Funding (4)
1 | Russian Foundation for Basic Research | 14-02-01211 |
2 | Russian Foundation for Basic Research | 07-02-92174 |
3 | European Commission | 255662 FP7-PEOPLE-2009-IIF EPREXINA |
4 | The Ministry of Education and Science of the Russian Federation | 16.552.11.7003 |
Abstract:
Heat treatment of borate glasses co-doped with low contents of iron and larger radius elements: Dy, Tb, Gd, Ho, Er, Y and Bi results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: XRD, EXAFS, XANES and SAXS, show a broad distribution of nanoparticle sizes with characteristic depending on the treatment regime; a crystalline structure of these nanoparticles is detected in heat treated samples. Magnetic circular dichroism (MCD) studies of samples subjected to heat treatment as well as of maghemite, magnetite and iron garnet allow to unambiguously assigning the nanoparticle structure to maghemite. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. Variable-temperature electron magnetic resonance (EMR) studies confirm the formation of magnetic nanoparticles and the identification of their nature. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by 'direct' techniques.
Cite:
Edelman I.S.
, Ivanova O.S.
, Zubavichus Y.V.
, Trofimova N.N.
, Zaikovskiy V.I.
, Artemenko A.
, Curely J.
, Kliava J.
Magnetic Nanoparticles in Borate Glasses: Identification and Sizing
In compilation 2014 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM). – Institute of Electrical and Electronics Engineers., 2014. – C.95-104. – ISBN 9781479951833. DOI: 10.1109/OPTIM.2014.6850939 WOS Scopus РИНЦ
Magnetic Nanoparticles in Borate Glasses: Identification and Sizing
In compilation 2014 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM). – Institute of Electrical and Electronics Engineers., 2014. – C.95-104. – ISBN 9781479951833. DOI: 10.1109/OPTIM.2014.6850939 WOS Scopus РИНЦ
Dates:
Published print: | May 1, 2014 |
Identifiers:
Web of science | WOS:000343551300015 |
Scopus | 2-s2.0-84904880639 |
Elibrary | 23969911 |
OpenAlex | W2078530226 |
publication.block.citing_info:
БД | Цитирований |
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Web of science | 1 |