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Magnetism in nanoscale graphite flakes as seen via electron spin resonance
dc.creator | Ciric, Luka | |
dc.creator | Đokić, Dejan M. | |
dc.creator | Jacimovic, Jacim | |
dc.creator | Sienkiewicz, Andrzej | |
dc.creator | Magrez, Arnaud | |
dc.creator | Forro, Laszlo | |
dc.creator | Šljivančanin, Željko | |
dc.creator | Lotya, Mustafa | |
dc.creator | Coleman, Jonathan N. | |
dc.date.accessioned | 2018-03-01T22:30:40Z | |
dc.date.available | 2018-03-01T22:30:40Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/4858 | |
dc.description.abstract | Magnetic properties of a large assembly of ultrathin graphitic particles obtained by heavy sonication of graphite powder dispersed in N-methylpyrrolidone were measured by electron-spin resonance (ESR). The ESR signal was decomposed into one narrow and one broad component. The narrow component was associated with localized Curie-type defects. The temperature dependence of the predominant broad component points to a transition to a superparamagnetic-like state at 25 K. By performing the density-functional-theory calculations for graphene with selected extended defects (the sheet edges, zigzag chains of chemisorbed H atoms, and pentagon-octagon rows), we found considerable magnetic moments at C atoms in their vicinities. We attribute the magnetism in the graphitic particles to the localized electronic states near the defects in the network of the p electrons of graphene. The ferromagnetic (FM) correlations among magnetic moments at carbon atoms near the edges are not able to give rise to a long-range FM order. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171033/RS// | |
dc.relation | Swiss NSF, Swiss NSF and its NCCR MaNEP, European research network Impress | |
dc.rights | restrictedAccess | en |
dc.source | Physical Review B: Condensed Matter and Materials Physics | en |
dc.title | Magnetism in nanoscale graphite flakes as seen via electron spin resonance | en |
dc.type | article | en |
dcterms.abstract | Цолеман, Јонатхан Н.; Форро, Ласзло; Лотyа, Мустафа; Цириц, Лука; Дјокиц, Дејан М.; Шљиванчанин Жељко; Магрез, Aрнауд; Сиенкиеwицз, Aндрзеј; Јацимовиц, Јацим; | |
dc.citation.volume | 85 | |
dc.citation.issue | 20 | |
dc.identifier.wos | 000304395600009 | |
dc.identifier.doi | 10.1103/PhysRevB.85.205437 | |
dc.citation.other | Article Number: 205437 | |
dc.citation.rank | M21 | |
dc.identifier.scopus | 2-s2.0-84861798512 |
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