https://doi.org/10.1140/epjb/s10051-025-00971-w
Regular Article - Solid State and Materials
Magnetic map of Cr adatom, Cr dimer and Cr–O on Co(0001) hcp: first principles calculations
1
Facultad de Ciencias de la Tierra y el Espacio, Universidad Autónoma de Sinaloa, Calzada de las Américas y Universitarios, Colonia Universitaria, 80010, Culiacán, Sinaloa, Mexico
2
Facultad de Ciencias Químico-Biologicas, Universidad Autónoma de Sinaloa, Calzada de las Américas y Universitarios, Colonia Universitaria, 80010, Culiacán, Sinaloa, Mexico
3
Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Sinaloa, Calzada de las Américas y Universitarios, Colonia Universitaria, 80010, Culiacán, Sinaloa, Mexico
Received:
29
May
2024
Accepted:
23
May
2025
Published online:
15
June
2025
Magnetism of Cr adatom, Cr dimer and Cr–O on Co(0001) hcp substrate is studied on the basis of density functional theory using Quantum Espresso code. The most stable geometry occurs when Cr is adsorbed in the most highly coordinated sites. Cr adatom couples antiferromagnetically with the Co atoms and shows a high magnetic moment of 4.57 
. Cr dimer also couples antiferromagnetically with the Co atoms, shows a magnetic moment of 4.50 for both Cr atoms and increases its interatomic distance to minimize its energy. For the Cr–O, the most stable state is when the Cr atom is coupled antiferromagnetically with Co substrate atoms. The effect of O atom decreases the Cr and Co atomic magnetic moments for the first nearest neighbors. For Cr–O, calculations were performed with DFT and DFT+U approaches because oxygen is not well described by DFT-only. The DFT+U increases the interatomic distances and magnetic moments on Cr and its Co nearest neighbors.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
