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Determining the Proximity Effect-Induced Magnetic Moment in Graphene by Polarized Neutron Reflectivity and X-ray Magnetic Circular Dichroism
[Image: see text] We report the magnitude of the induced magnetic moment in CVD-grown epitaxial and rotated-domain graphene in proximity with a ferromagnetic Ni film, using polarized neutron reflectivity (PNR) and X-ray magnetic circular dichroism (XMCD). The XMCD spectra at the C K-edge confirm the...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10176321/ https://www.ncbi.nlm.nih.gov/pubmed/37092734 http://dx.doi.org/10.1021/acsami.2c02840 |
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author | Aboljadayel, Razan O. M. Kinane, Christy J. Vaz, Carlos A. F. Love, David M. Weatherup, Robert S. Braeuninger-Weimer, Philipp Martin, Marie-Blandine Ionescu, Adrian Caruana, Andrew J. Charlton, Timothy R. Llandro, Justin Monteiro, Pedro M. S. Barnes, Crispin H. W. Hofmann, Stephan Langridge, Sean |
author_facet | Aboljadayel, Razan O. M. Kinane, Christy J. Vaz, Carlos A. F. Love, David M. Weatherup, Robert S. Braeuninger-Weimer, Philipp Martin, Marie-Blandine Ionescu, Adrian Caruana, Andrew J. Charlton, Timothy R. Llandro, Justin Monteiro, Pedro M. S. Barnes, Crispin H. W. Hofmann, Stephan Langridge, Sean |
author_sort | Aboljadayel, Razan O. M. |
collection | PubMed |
description | [Image: see text] We report the magnitude of the induced magnetic moment in CVD-grown epitaxial and rotated-domain graphene in proximity with a ferromagnetic Ni film, using polarized neutron reflectivity (PNR) and X-ray magnetic circular dichroism (XMCD). The XMCD spectra at the C K-edge confirm the presence of a magnetic signal in the graphene layer, and the sum rules give a magnetic moment of up to ∼0.47 μ(B)/C atom induced in the graphene layer. For a more precise estimation, we conducted PNR measurements. The PNR results indicate an induced magnetic moment of ∼0.41 μ(B)/C atom at 10 K for epitaxial and rotated-domain graphene. Additional PNR measurements on graphene grown on a nonmagnetic Ni(9)Mo(1) substrate, where no magnetic moment in graphene is measured, suggest that the origin of the induced magnetic moment is due to the opening of the graphene’s Dirac cone as a result of the strong C p(z)-Ni 3d hybridization. |
format | Online Article Text |
id | pubmed-10176321 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-101763212023-05-13 Determining the Proximity Effect-Induced Magnetic Moment in Graphene by Polarized Neutron Reflectivity and X-ray Magnetic Circular Dichroism Aboljadayel, Razan O. M. Kinane, Christy J. Vaz, Carlos A. F. Love, David M. Weatherup, Robert S. Braeuninger-Weimer, Philipp Martin, Marie-Blandine Ionescu, Adrian Caruana, Andrew J. Charlton, Timothy R. Llandro, Justin Monteiro, Pedro M. S. Barnes, Crispin H. W. Hofmann, Stephan Langridge, Sean ACS Appl Mater Interfaces [Image: see text] We report the magnitude of the induced magnetic moment in CVD-grown epitaxial and rotated-domain graphene in proximity with a ferromagnetic Ni film, using polarized neutron reflectivity (PNR) and X-ray magnetic circular dichroism (XMCD). The XMCD spectra at the C K-edge confirm the presence of a magnetic signal in the graphene layer, and the sum rules give a magnetic moment of up to ∼0.47 μ(B)/C atom induced in the graphene layer. For a more precise estimation, we conducted PNR measurements. The PNR results indicate an induced magnetic moment of ∼0.41 μ(B)/C atom at 10 K for epitaxial and rotated-domain graphene. Additional PNR measurements on graphene grown on a nonmagnetic Ni(9)Mo(1) substrate, where no magnetic moment in graphene is measured, suggest that the origin of the induced magnetic moment is due to the opening of the graphene’s Dirac cone as a result of the strong C p(z)-Ni 3d hybridization. American Chemical Society 2023-04-24 /pmc/articles/PMC10176321/ /pubmed/37092734 http://dx.doi.org/10.1021/acsami.2c02840 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Aboljadayel, Razan O. M. Kinane, Christy J. Vaz, Carlos A. F. Love, David M. Weatherup, Robert S. Braeuninger-Weimer, Philipp Martin, Marie-Blandine Ionescu, Adrian Caruana, Andrew J. Charlton, Timothy R. Llandro, Justin Monteiro, Pedro M. S. Barnes, Crispin H. W. Hofmann, Stephan Langridge, Sean Determining the Proximity Effect-Induced Magnetic Moment in Graphene by Polarized Neutron Reflectivity and X-ray Magnetic Circular Dichroism |
title | Determining the Proximity
Effect-Induced Magnetic
Moment in Graphene by Polarized Neutron Reflectivity and X-ray
Magnetic Circular Dichroism |
title_full | Determining the Proximity
Effect-Induced Magnetic
Moment in Graphene by Polarized Neutron Reflectivity and X-ray
Magnetic Circular Dichroism |
title_fullStr | Determining the Proximity
Effect-Induced Magnetic
Moment in Graphene by Polarized Neutron Reflectivity and X-ray
Magnetic Circular Dichroism |
title_full_unstemmed | Determining the Proximity
Effect-Induced Magnetic
Moment in Graphene by Polarized Neutron Reflectivity and X-ray
Magnetic Circular Dichroism |
title_short | Determining the Proximity
Effect-Induced Magnetic
Moment in Graphene by Polarized Neutron Reflectivity and X-ray
Magnetic Circular Dichroism |
title_sort | determining the proximity
effect-induced magnetic
moment in graphene by polarized neutron reflectivity and x-ray
magnetic circular dichroism |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10176321/ https://www.ncbi.nlm.nih.gov/pubmed/37092734 http://dx.doi.org/10.1021/acsami.2c02840 |
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