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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 6
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: CHEMISTRY OF MATERIALS; v. 30, n. 20, p. 7201-7210, OCT 23 2018.
Web of Science Citations: 1
Abstract

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)

FAPESP's process: 07/54829-5 - Electronic and geometric structure of nano-materials: synchrotron radiation studies
Grantee:Richard Landers
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 07/08244-5 - Study of the magnetic properties of Pd and PdAu ultrathin films and nanoparticles by using XMCD
Grantee:Abner de Siervo
Support Opportunities: Regular Research Grants
FAPESP's process: 16/21402-8 - Growth and characterization of two-dimensional heterostructures: transition metal dichalcogenides on graphene and hexagonal boron nitride
Grantee:Luis Henrique de Lima
Support Opportunities: Scholarships in Brazil - Post-Doctoral