Publikationen

Nickel clusters embedded in carbon nanotubes as high performance magnets

Autor(en)
Hidetsugu Shiozawa, Juan Antonio Briones Leon, Oleg Domanov, Georg Zechner, Yuta Sato, Kazu Suenaga, Takeshi Saito, Michael Eisterer, Eugen Weschke, Wolfgang Lang, Herwig Peterlik, Thomas Pichler
Abstrakt

Ensembles of fcc nickel nanowires have been synthesized with defined mean sizes in the interior of single-wall carbon nanotubes. The method allows the intrinsic nature of single-domain magnets to emerge with large coercivity as their size becomes as small as the exchange length of nickel. By means of X-ray magnetic circular dichroism we probe electronic interactions at nickel-carbon interfaces where nickel exhibit no hysteresis and size-dependent spin magnetic moment. A manifestation of the interacting two subsystems on a bulk scale is traced in the nanotube's magnetoresistance as explained within the framework of weak localization.

Organisation(en)
Elektronische Materialeigenschaften, Dynamik Kondensierter Systeme, Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
National Institute of Advanced Industrial Science and Technology (AIST), Technische Universität Wien, Helmholtz-Zentrum Berlin für Materialien und Energie
Journal
Scientific Reports
Band
5
Anzahl der Seiten
9
ISSN
2045-2322
DOI
https://doi.org/10.1038/srep15033
Publikationsdatum
10-2015
Peer-reviewed
Ja
ÖFOS 2012
Materialphysik
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/nickel-clusters-embedded-in-carbon-nanotubes-as-high-performance-magnets(a336b95f-31f1-4886-a51d-2bec6f251c89).html