Theoretical investigation of interface atomic structure of graphene on NiFe alloy substrate
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915350470197248 |
|---|---|
| author | Matsumoto, Naohiro Endo, Ryusuke Uemoto, Mitsuharu Ono, Tomoya |
| author_facet | Matsumoto, Naohiro Endo, Ryusuke Uemoto, Mitsuharu Ono, Tomoya |
| contents | Two processes have been proposed to fabricate graphene/NiFe alloy interfaces for tunneling magnetoresistance devices. One is the transfer of graphene and the other is the evaporation of alloys onto graphene. The formation energy of a NiFe alloy substrate and the adsorption energy of graphene on the NiFe alloy substrate are investigated by a density functional theory calculations to reveal the difference in the atomic structure of the interface between the two processes. It is found that Ni-rich surfaces are preferable for the bare substrate, whereas Fe surfaces are stable for the graphene adsorbed on the substrate. This result indicates that the composition ratio of the surface layer depends on the interface fabrication process. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14026 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Theoretical investigation of interface atomic structure of graphene on NiFe alloy substrate Matsumoto, Naohiro Endo, Ryusuke Uemoto, Mitsuharu Ono, Tomoya Materials Science Mesoscale and Nanoscale Physics Computational Physics Two processes have been proposed to fabricate graphene/NiFe alloy interfaces for tunneling magnetoresistance devices. One is the transfer of graphene and the other is the evaporation of alloys onto graphene. The formation energy of a NiFe alloy substrate and the adsorption energy of graphene on the NiFe alloy substrate are investigated by a density functional theory calculations to reveal the difference in the atomic structure of the interface between the two processes. It is found that Ni-rich surfaces are preferable for the bare substrate, whereas Fe surfaces are stable for the graphene adsorbed on the substrate. This result indicates that the composition ratio of the surface layer depends on the interface fabrication process. |
| title | Theoretical investigation of interface atomic structure of graphene on NiFe alloy substrate |
| topic | Materials Science Mesoscale and Nanoscale Physics Computational Physics |
| url | https://arxiv.org/abs/2505.14026 |