TY  - JOUR
AU  - Herman, Alexander
AU  - Kraus, Stefan
AU  - Tsukamoto, Shigeru
AU  - Spieker, Lea
AU  - Caciuc, Vasile
AU  - Lojewski, Tobias
AU  - Günzing, Damian
AU  - Dreiser, Jan
AU  - Delley, Bernard
AU  - Ollefs, Katharina
AU  - Michely, Thomas
AU  - Atodiresei, Nicolae
AU  - Wende, Heiko
TI  - Tailoring magnetic anisotropy by graphene-induced selective skyhook effect on 4f-metals
JO  - Nanoscale
VL  - 14
IS  - 20
SN  - 2040-3364
CY  - Cambridge
PB  - RSC Publ.
M1  - FZJ-2022-02402
SP  - 7682 - 7691
PY  - 2022
AB  - From macroscopic heavy-duty permanent magnets to nanodevices, the precise control of the magnetic properties in rare-earth metals is crucial for many applications used in our daily life. Therefore, a detailed understanding and manipulation of the 4f-metals’ magnetic properties are key to further boosting the functionalization and efficiency of future applications. We present a proof-of-concept approach consisting of a dysprosium-iridium surface alloy in which graphene adsorption allows us to tailor its magnetic properties. By adsorbing graphene onto a long-range ordered two-dimensional dysprosium-iridium surface alloy, the magnetic 4f-metal atoms are selectively lifted from the surface alloy. This selective skyhook effect introduces a giant magnetic anisotropy in dysprosium atoms as a result of manipulating its geometrical structure within the surface alloy. Introducing and proving this concept by our combined theoretical and experimental approach provides an easy and unambiguous understanding of its underlying mechanism. Our study sets the ground for an alternative path on how to modify the crystal field around 4f-atoms and therefore their magnetic anisotropies.
LB  - PUB:(DE-HGF)16
C6  - 35546135
UR  - <Go to ISI:>//WOS:000793979600001
DO  - DOI:10.1039/D2NR01458K
UR  - https://juser.fz-juelich.de/record/908138
ER  -