Measurement of the Induced Magnetic Polarisation of Rotated-Domain Graphene Grown on Co Film with Polarised Neutron Reflectivity.
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| Title: | Measurement of the Induced Magnetic Polarisation of Rotated-Domain Graphene Grown on Co Film with Polarised Neutron Reflectivity. |
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| Authors: | Aboljadayel, Razan Omar M.1 (AUTHOR) roma2@cantab.ac.uk, Kinane, Christy John2 (AUTHOR), Vaz, Carlos Antonio Fernandes3 (AUTHOR) carlos.vaz@psi.ch, Love, David Michael1 (AUTHOR), Martin, Marie-Blandine4 (AUTHOR), Cabrero-Vilatela, Andrea4 (AUTHOR), Braeuninger-Weimer, Philipp4 (AUTHOR), Ionescu, Adrian1 (AUTHOR) roma2@cantab.ac.uk, Caruana, Andrew John2 (AUTHOR), Charlton, Timothy Randall2 (AUTHOR), Llandro, Justin1 (AUTHOR), Monteiro, Pedro Manuel da Silva1 (AUTHOR), Barnes, Crispin Henry William1 (AUTHOR), Hofmann, Stephan4 (AUTHOR), Langridge, Sean2 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Oct2023, Vol. 13 Issue 19, p2620. 11p. |
| Subjects: | Neutron reflectivity, Magnetic measurements, Graphene, Magnetic circular dichroism, Magnetic moments, Neutron scattering |
| Abstract: | In this paper, we determine the magnetic moment induced in graphene when grown on a cobalt film using polarised neutron reflectivity (PNR). A magnetic signal in the graphene was detected by X-ray magnetic circular dichroism (XMCD) spectra at the C K-edge. From the XMCD sum rules an estimated magnetic moment of 0.3 μ B/C atom, while a more accurate estimation of 0.49 μ B/C atom was obtained by carrying out a PNR measurement at 300 K. The results indicate that the higher magnetic moment in Co is counterbalanced by the larger lattice mismatch between the Co-C (1.6%) and the slightly longer bond length, inducing a magnetic moment in graphene that is similar to that reported in Ni/graphene heterostructures. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | In this paper, we determine the magnetic moment induced in graphene when grown on a cobalt film using polarised neutron reflectivity (PNR). A magnetic signal in the graphene was detected by X-ray magnetic circular dichroism (XMCD) spectra at the C K-edge. From the XMCD sum rules an estimated magnetic moment of 0.3 μ B/C atom, while a more accurate estimation of 0.49 μ B/C atom was obtained by carrying out a PNR measurement at 300 K. The results indicate that the higher magnetic moment in Co is counterbalanced by the larger lattice mismatch between the Co-C (1.6%) and the slightly longer bond length, inducing a magnetic moment in graphene that is similar to that reported in Ni/graphene heterostructures. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano13192620 |
