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A New Class of Cluster–Matrix Nanocomposite Made of Fully Miscible Components

Iankevich, Gleb 1,2; Sarkar, Abhishek 1; Katnagallu, Shyam 1; Chellali, Mohammed Reda 1,3; Wang, Di ORCID iD icon 1,3; Velasco, Leonardo 1; Singh, Ruby 1; Reisinger, Thomas 1,2; Kruk, Robert 1; Hahn, Horst 1,2
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)
3 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)

Abstract:

Nanocomposite materials, consisting of two or more phases, at least one of which has a nanoscale dimension, play a distinctive role in materials science because of the multiple possibilities for tailoring their structural properties and, consequently, their functionalities. In addition to the challenges of controlling the size, size distribution, and volume fraction of nanometer phases, thermodynamic stability conditions limit the choice of constituent materials. This study goes beyond this limitation by showing the possibility of achieving nanocomposites from a bimetallic system, which exhibits complete miscibility under equilibrium conditions. A series of nanocomposite samples with different compositions are synthesized by the co-deposition of 2000-atom Ni-clusters and a flux of Cu-atoms using a novel cluster ion beam deposition system. The retention of the metastable nanostructure is ascertained from atom probe tomography (APT), magnetometry, and magnetotransport studies. APT confirms the presence of nanoscale regions with ≈100 at% Ni. Magnetometry and magnetotransport studies reveal superparamagnetic behavior and magnetoresistance stemming from the single-domain ferromagnetic Ni-clusters embedded in the Cu-matrix. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000155090
Veröffentlicht am 25.01.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für QuantenMaterialien und Technologien (IQMT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 02.03.2023
Sprache Englisch
Identifikator ISSN: 0935-9648, 1521-4095
KITopen-ID: 1000155090
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Weitere HGF-Programme 47.12.02 (POF IV, LK 01) Exploratory Qubits
Erschienen in Advanced Materials
Verlag John Wiley and Sons
Band 35
Heft 9
Seiten Art.Nr. 2208774
Vorab online veröffentlicht am 26.11.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
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