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Magnetic and structural properties of nanocomposite Co-Ni-Cr-Al-Y-N thin films

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Abstract

The relation between structural and magnetic properties of Co-Ni-Cr-Al-Y-N thin films deposited by reactive r.f. magnetron sputtering was investigated. A marked change in the magnetic behaviour of the films with the different nitrogen partial pressure in the Ar/N2 deposition atmosphere was observed and qualitatively explained in correlation with the phase composition.

The nanocrystalline metal solid-solution obtained at low N2 content and the nanocrystalline nitride/amorphous composite obtained at high N2 content are not magnetic, whereas the amorphous phase produced for intermediate N2 pressures behaves like a ferromagnetic semi-permanent material. The results demonstrate the possibility of modulating the magnetic properties of r.f. magnetron sputtered Co-Ni-Cr-Al-Y-N thin films, thus opening a new route for magnetic multilayer deposition.

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Authors and Affiliations

  1. Department of Materials Engineering and Industrial Technologies, University of Trento, via Mesiano 77, 38050, Trento, Italy

    P. Scardi & M. Leoni

  2. COHERENTIA-INFM Unit of Napoli and Department of Physical Science, University of Napoli ‘Federico II’, P.le Tecchio 80, 80125, Napoli, Italy

    G. Ausanio, V. Iannotti & L. Lanotte

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  1. P. Scardi
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  2. M. Leoni
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  3. G. Ausanio
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  4. V. Iannotti
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  5. L. Lanotte
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Correspondence to P. Scardi.

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PACS

68.55.-a; 75.70.Ak; 75.75.+a; 85.70.-w

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Scardi, P., Leoni, M., Ausanio, G. et al. Magnetic and structural properties of nanocomposite Co-Ni-Cr-Al-Y-N thin films. Appl. Phys. A 81, 143–146 (2005). https://doi.org/10.1007/s00339-004-2990-6

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  • DOI: https://doi.org/10.1007/s00339-004-2990-6

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