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Magnetic properties of iron cluster/chromium matrix nanocomposites

Fischer, A. 1; Kruk, R. 1; Wang, D. ORCID iD icon 1; Hahn, H. 1
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


A custom-designed apparatus was used for the fine-tuned co-deposition of preformed Fe clusters into antiferromagnetic Cr matrices. Three series of samples with precisely defined cluster sizes, with accuracy to a few atoms, and controlled concentrations were fabricated, followed by a complete characterization of structure and magnetic performance. Relevant magnetic characteristics, reflecting the ferromagnetic/antiferromagnetic coupling between Fe clusters and the Cr matrix, i.e., blocking temperature, coercivity field, and exchange bias were measured and their dependence on cluster size and cluster concentration in the matrix was analyzed. It is evident that the blocking temperatures are clearly affected by both the cluster size and their concentration in the Cr matrix. In contrast the coercivity shows hardly any dependence on size or inter-cluster distance. The exchange bias was found to be strongly sensitive to the cluster size but not to the inter-cluster distances. Therefore, it was concluded to be an effect that is purely localized at the interfaces.

Volltext §
DOI: 10.5445/IR/110101191
DOI: 10.3762/bjnano.6.117
Zitationen: 8
Web of Science
Zitationen: 8
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2190-4286
KITopen-ID: 110101191
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in Beilstein journal of nanotechnology
Verlag Beilstein-Institut
Band 6
Seiten 1158-1163
Bemerkung zur Veröffentlichung CCby-Lizenz 2.0
Nachgewiesen in Scopus
Web of Science
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