Iron nanoparticle driven spin-valve behavior in aligned carbon nanotube arrays

We report the operation of spin-valve structures formed from arrays of aligned carbon nanotubes. The devices require only one deposited ferromagnetic layer with the embedded iron catalyst nanoparticle serving as the other magnetic electrode. A peak in the resistance occurs clearly as a result of the...

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Bibliographic Details
Published in:Applied physics letters 2008-10, Vol.93 (17)
Main Authors: Bergeson, J. D., Etzkorn, S. J., Murphey, M. B., Qu, L., Yang, J., Dai, L., Epstein, A. J.
Format: Article
Language:English
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Summary:We report the operation of spin-valve structures formed from arrays of aligned carbon nanotubes. The devices require only one deposited ferromagnetic layer with the embedded iron catalyst nanoparticle serving as the other magnetic electrode. A peak in the resistance occurs clearly as a result of the reversal of the magnetization of the electrodes. Device magnetoresistance ratios reach 25%, yielding an estimate of the spin scattering length of 9μm at low temperature.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2999374