Data · dataset · 2026
Graphene-Enhanced Magnetic Anisotropies in Fe/Ni (100) Superlattices with Monolayer Periodicity
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Fe/Ni(100) superlattices grown on graphene/Ir(100) by intercalation of alternate monolayers of Ni and Fe under graphene show magnetic properties severely modified.
Description
The graphene–iron interaction at the external interface produces a surface anisotropy <i>K</i><sub>int</sub>(gr/Fe) = 0.89 ± 0.08 mJ/m<sup>2</sup>, large enough to drive the uniaxial, out-of-plane magnetic anisotropy of the whole superlattice to <i>K</i><sub>U</sub> = 0.87 ± 0.03 MJ/m<sup>3</sup> and compensate the in-plane shape anisotropy characteristic of thin magnetic layers.
Graphene also introduces an additional trigonal in-plane anisotropy superimposed to the biaxial anisotropy of the underlying Fe/Ni (100) superlattice and increases the <i>m</i><sub>L(parallel)</sub>/<i>m</i><sub>spin</sub> ratio by 50% with respect to Fe/Ni films grown without graphene, as determined by XMCD. The films show chemical ordering plane-by-plane and a strongly distorted face-centered tetragonal (fct) structure, as determined by synchrotron-based X-ray diffraction.
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The gr-Fe charge transfer and the electronic hybridization of the respective π and d bands at the interface are responsible for the observed magnetic phenomena.
Links
Where it is published
- DOI doi.org/10.1021/acs.nanolett.6c03892.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Chemistry · Earth & Environmental Science
- Inferred from text
- Macromolecular and materials chemistry 71%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34018137 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:group:3403 | enrichment · zivahub uct ac za | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |