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Proceedings Paper

Spin-dependent transport in hard superparamagnetic C:Ni nanocomposites
Author(s): Shengqiang Zhou; G. Abrasonis; A. Mücklich; K. Potzger; J. Fassbender; M. Helm; H. Schmidt
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Paper Abstract

Structural, magnetic, and magneto-transport properties in C:Ni (30 at.%) nanocomposite films grown by ion beam cosputtering at 500 °C are investigated by means of transmission electron microscopy, superconducting quantum interference device magnetometry and electrical transport measurements. The C:Ni film shows a superparamagnetic behavior with a large coercivity field of 250 Oe at 5 K compared with bulk Ni metals. Anomalous Hall effect is observed in C:Ni nanocomposites, which is attributed to the scattering of spin-polarized carriers by the magnetic Ni nanoparticles in the carbon matrix.

Paper Details

Date Published: 28 May 2009
PDF: 8 pages
Proc. SPIE 7364, Nanotechnology IV, 736406 (28 May 2009); doi: 10.1117/12.821465
Show Author Affiliations
Shengqiang Zhou, Forschungszentrum Dresden-Rossendorf (Germany)
G. Abrasonis, Forschungszentrum Dresden-Rossendorf (Germany)
A. Mücklich, Forschungszentrum Dresden-Rossendorf (Germany)
K. Potzger, Forschungszentrum Dresden-Rossendorf (Germany)
J. Fassbender, Forschungszentrum Dresden-Rossendorf (Germany)
M. Helm, Forschungszentrum Dresden-Rossendorf (Germany)
H. Schmidt, Forschungszentrum Dresden-Rossendorf (Germany)

Published in SPIE Proceedings Vol. 7364:
Nanotechnology IV
Achim Wixforth, Editor(s)

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