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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Unraveling the Atomic Structure of Fe Intercalated under Graphene on Ir(111): A Multitechnique Approach

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Autor(es):
de Campos Ferreira, Rodrigo Cezar [1] ; de Lima, Luis Henrique [2] ; Barreto, Lucas [2] ; Silva, Caio C. [1] ; Landers, Richard [1] ; de Siervo, Abner [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Santo Andre, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: CHEMISTRY OF MATERIALS; v. 30, n. 20, p. 7201-7210, OCT 23 2018.
Citações Web of Science: 1
Resumo

The interaction of Fe deposited on graphene grown on Ir(111) was studied in detail to better understand the growth, intercalation, and oxidation of Fe ultrathin films on and under graphene. The study has combined a multiple technique approach that allows extracting at once the chemical, topographic, and precise atomic structure of the system submitted to different conditions of growth and atmospheric environment. For instance, scanning tunneling microscopy (STM) measurements allowed us to follow the formation of Fe nanostructures during Fe deposition and intercalation. Synchrotron-based high-resolution X-ray photoelectron spectroscopy (HR-XPS) untangled the different chemical environments for C-Fe bonds. We have also used photoelectron diffraction experiments to site-specifically unravel the atomic structure of the intercalated Fe under graphene. Oxidation experiments were also performed for samples prepared under different conditions which revealed that indeed one can set the sample temperature to selectively protect or oxidize the intercalated/supported materials, which open interesting possibilities to engineer complex metal-oxide graphene-based devices. (AU)

Processo FAPESP: 07/54829-5 - Estrutura eletrônica e geométrica de nano materiais: um estudo por radiação sincroton
Beneficiário:Richard Landers
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 07/08244-5 - Estudo das propriedades magnéticas de filmes ultrafinos e nanopartículas de Pd e PdAu via XMCD
Beneficiário:Abner de Siervo
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/21402-8 - Crescimento e caracterização de heteroestruturas bidimensionais: dicalcogenetos de metais de transição sobre grafeno e nitreto de boro hexagonal
Beneficiário:Luis Henrique de Lima
Linha de fomento: Bolsas no Brasil - Pós-Doutorado