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

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

103018 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