Afficher la notice abrégée

Effect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses

hal.structure.identifierKirensky Institute of Physics
dc.contributor.authorEDELMAN, Irina
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorKLIAVA, Janis
hal.structure.identifierKirensky Institute of Physics
dc.contributor.authorIVANOVA, Oxana
hal.structure.identifierKirensky Institute of Physics
dc.contributor.authorIVANTSOV, Ruslan
hal.structure.identifierKirensky Institute of Physics
hal.structure.identifierSiberian Federal University [SibFU]
dc.contributor.authorVELIKANOV, D.
hal.structure.identifierBoreskov Institute of Catalysis
dc.contributor.authorZAIKOVSKII, Vladimir
hal.structure.identifierKirensky Institute of Physics
dc.contributor.authorPETRAKOVSKAJA, Eleonora
hal.structure.identifierNational Research Centre "Kurchakov Institute" [NRC KI]
dc.contributor.authorZUBAVICHUS, Y.
hal.structure.identifierS.I. Vavilov State Optical Institute
dc.contributor.authorS., Stepanov
dc.date.created2018-10-29
dc.date.issued2019-02-15
dc.identifier.issn0022-3093
dc.description.abstractEnA 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.isoen
dc.publisherElsevier
dc.subject.enIron oxides
dc.subject.enBorate glasses
dc.subject.enNanoparticles
dc.subject.enMagnetic circular dichroism
dc.subject.enElectron magnetic resonance
dc.title.enEffect of gadolinium on magnetic circular dichroism and electron magnetic resonance of ε-Fe2O3 nanoparticles formed in borate glasses
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jnoncrysol.2018.12.006
dc.subject.halSciences de l'ingénieur [physics]/Electromagnétisme
bordeaux.journalJournal of Non-Crystalline Solids
bordeaux.page68-79
bordeaux.volume506
bordeaux.peerReviewedoui
hal.identifierhal-02018140
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02018140v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Non-Crystalline%20Solids&rft.date=2019-02-15&rft.volume=506&rft.spage=68-79&rft.epage=68-79&rft.eissn=0022-3093&rft.issn=0022-3093&rft.au=EDELMAN,%20Irina&KLIAVA,%20Janis&IVANOVA,%20Oxana&IVANTSOV,%20Ruslan&VELIKANOV,%20D.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée