1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/58307
Full metadata record
DC FieldValueLanguage
dc.creatorOlga Aleksandrovna Maslovapt_BR
dc.creatorMohamed-Ramzi Ammarpt_BR
dc.creatorCristiano Fantini Leitept_BR
dc.creatorSvetlana Aleksandrovna Barannikovapt_BR
dc.creatorMarcos Assunção Pimentapt_BR
dc.date.accessioned2023-08-28T19:42:07Z-
dc.date.available2023-08-28T19:42:07Z-
dc.date.issued2021-
dc.citation.volume52pt_BR
dc.citation.issue3pt_BR
dc.citation.spage670pt_BR
dc.citation.epage677pt_BR
dc.identifier.doihttps://doi.org/10.1002/jrs.6051pt_BR
dc.identifier.issn1097-4555pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/58307-
dc.description.resumoThe Raman spectra of graphene-based matter exhibit a set of defect/disorder-induced bands. The D band, which exhibits a strong dispersion up to ~50 cm−1/eV, comes from transverse optical phonons around K or K′ in the first Brillouin zone and involves an intervalley double resonance (DR) Raman process. In the present work, resonant Raman scattering (lines ranging from 1.58 to 3.81 eV) is used to study the unusual behavior of the one-phonon Raman band of a carbonaceous material (anthracene-based carbon which is one of the graphitizable carbons) upon its secondary carbonization stage (450°C–1000°C). While the G band appears to be nondispersive, the D band exhibits a change in both position and intensity. Its dispersion progressively rises from ~6 cm−1/eV to values close to what is usually observed in defected graphene-based systems when anthracene-based carbon becomes almost pure. This evolution appears to be correlated with a release of hydrogen (fixed on the edges of polyaromatic layers) questioning their role in changing the D band resonance conditions.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)pt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Raman Spectroscopy-
dc.rightsAcesso Restritopt_BR
dc.subjectAnthracene-based cokept_BR
dc.subjectD-bandpt_BR
dc.subjectDouble resonance processpt_BR
dc.subjectGraphitizable carbonpt_BR
dc.subjectSecondary carbonizationpt_BR
dc.subject.otherRessonânciapt_BR
dc.subject.otherCarbonopt_BR
dc.subject.otherEspectroscopia de Ramanpt_BR
dc.titleResonant Raman scattering of anthracene-based carbons in the secondary carbonization stagept_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jrs.6051pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5460-4091pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1607-9513pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0436-7857pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5010-9969pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3389-0682pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
There are no files associated with this item.
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.