Effect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses
hal.structure.identifier | Kirensky Institute of Physics | |
dc.contributor.author | EDELMAN, Irina | |
hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
dc.contributor.author | KLIAVA, Janis | |
hal.structure.identifier | Kirensky Institute of Physics | |
dc.contributor.author | IVANOVA, Oxana | |
hal.structure.identifier | Kirensky Institute of Physics | |
dc.contributor.author | IVANTSOV, Ruslan | |
hal.structure.identifier | Kirensky Institute of Physics | |
hal.structure.identifier | Siberian Federal University [SibFU] | |
dc.contributor.author | VELIKANOV, D. | |
hal.structure.identifier | Boreskov Institute of Catalysis | |
dc.contributor.author | ZAIKOVSKII, Vladimir | |
hal.structure.identifier | Kirensky Institute of Physics | |
dc.contributor.author | PETRAKOVSKAJA, Eleonora | |
hal.structure.identifier | National Research Centre "Kurchakov Institute" [NRC KI] | |
dc.contributor.author | ZUBAVICHUS, Y. | |
hal.structure.identifier | S.I. Vavilov State Optical Institute | |
dc.contributor.author | S., Stepanov | |
dc.date.created | 2018-10-29 | |
dc.date.issued | 2019-02-15 | |
dc.identifier.issn | 0022-3093 | |
dc.description.abstractEn | A remarkable characteristic of borate glasses is the ability of forming magnetic nanoparticles at low doping with transition element oxides. We have studied structure and magnetic properties of iron oxide nanoparticles formed in borate glasses, in particular, concentration and temperature dependences of magnetic circular dichroism (MCD) and electron magnetic resonance (EMR) spectra. A series of glasses of molar composition 22.5K 2 O-22.5Al 2 O 3-55B 2 O 3 doped with 1.5 mass % of Fe 2 O 3 and different contents of Gd 2 O 3 from 0.1 to 1.0 mass % was prepared using a conventional melt quenching technique and subjected to an additional thermal treatment. The whole set of results allows to identify the predominant magnetic phase in these glasses as ε-Fe 2 O 3 nanoparticles, with a considerable part of iron ions substituted by gadolinium. Analysis and computer simulations of the EMR spectra allow separating the contribution of electron paramagnetic resonance of diluted iron ions and together with the temperature dependences of magnetization demonstrate a superparamagnetic character of the nano-particle magnetism. | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.subject.en | Iron oxides | |
dc.subject.en | Borate glasses | |
dc.subject.en | Nanoparticles | |
dc.subject.en | Magnetic circular dichroism | |
dc.subject.en | Electron magnetic resonance | |
dc.title.en | Effect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.jnoncrysol.2018.12.006 | |
dc.subject.hal | Sciences de l'ingénieur [physics]/Electromagnétisme | |
bordeaux.journal | Journal of Non-Crystalline Solids | |
bordeaux.page | 68-79 | |
bordeaux.volume | 506 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02018140 | |
hal.version | 1 | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02018140v1 | |
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