Enhanced magnetoresistance of Co/Cu(111) wedge superlattices grown by MBE

Enhanced magnetoresistance of Co/Cu(111) wedge superlattices grown by MBE

We have grown epitaxial Co/Cu multilayer samples at different temperatures using MBE on sapphire (1120)0 substrates with a 30 Å layer of Nb as a buffer, and find a remarkable correlation between the sharpness of X-ray rocking curves and the magnitude of the GMR. Whereas the peak GMR for our previous...

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Veröffentlicht in:Journal of magnetism and magnetic materials 1996-04, Vol.156 (1-3), p.69-70
Hauptverfasser: Xu, J., Hickey, B.J., Howson, M.A., Greig, D., Walker, M.J., Wiser, N.
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Sprache:eng
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Zusammenfassung:We have grown epitaxial Co/Cu multilayer samples at different temperatures using MBE on sapphire (1120)0 substrates with a 30 Å layer of Nb as a buffer, and find a remarkable correlation between the sharpness of X-ray rocking curves and the magnitude of the GMR. Whereas the peak GMR for our previous samples grown on GaAs was never greater than 26%, the maximum GMR of samples grown on sapphire under optimal growth conditions was as high as 50%.
ISSN:0304-8853
DOI:10.1016/0304-8853(95)00790-3