Universität zu Köln

Herman, Alexander, Kraus, Stefan ORCID: 0000-0002-5987-746X, Tsukamoto, Shigeru ORCID: 0000-0001-5271-9277, Spieker, Lea ORCID: 0000-0002-3944-2696, Caciuc, Vasile, Lojewski, Tobias, Guenzing, Damian, Dreiser, Jan ORCID: 0000-0001-7480-1271, Delley, Bernard ORCID: 0000-0002-7020-2869, Ollefs, Katharina, Michely, Thomas ORCID: 0000-0003-1657-1847, Atodiresei, Nicolae and Wende, Heiko ORCID: 0000-0001-8395-3541 (2022). Tailoring magnetic anisotropy by graphene-induced selective skyhook effect on 4f-metals. Nanoscale, 14 (20). S. 7682 - 7692. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 2040-3372

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Abstract

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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Herman, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Kraus, Stefan UNSPECIFIED orcid.org/0000-0002-5987-746X UNSPECIFIED Tsukamoto, Shigeru UNSPECIFIED orcid.org/0000-0001-5271-9277 UNSPECIFIED Spieker, Lea UNSPECIFIED orcid.org/0000-0002-3944-2696 UNSPECIFIED Caciuc, Vasile UNSPECIFIED UNSPECIFIED UNSPECIFIED Lojewski, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Guenzing, Damian UNSPECIFIED UNSPECIFIED UNSPECIFIED Dreiser, Jan UNSPECIFIED orcid.org/0000-0001-7480-1271 UNSPECIFIED Delley, Bernard UNSPECIFIED orcid.org/0000-0002-7020-2869 UNSPECIFIED Ollefs, Katharina UNSPECIFIED UNSPECIFIED UNSPECIFIED Michely, Thomas UNSPECIFIED orcid.org/0000-0003-1657-1847 UNSPECIFIED Atodiresei, Nicolae UNSPECIFIED UNSPECIFIED UNSPECIFIED Wende, Heiko UNSPECIFIED orcid.org/0000-0001-8395-3541 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-682483
DOI:	10.1039/d2nr01458k
Journal or Publication Title:	Nanoscale
Volume:	14
Number:	20
Page Range:	S. 7682 - 7692
Date:	2022
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	2040-3372
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68248