Giant Magnetoresistance in Granular Ni81Fe19/Ag Formed from Annealed Multilayers

MRS Online Proceedings Library volume 313, pages405–410(1993)Cite this article

Abstract

We have observed giant magnetoresistance (GMR) in Ni81Fe19/Ag granular structures synthesized by the annealing of artificial multilayers made by sputtering. The size and morphology of the magnetic precipitates can be controlled by adjusting the magnetic layer thickness in the initial stage. Magnetoresistance as large as 30% was found at 4.2 K with a rather small saturation field. Giant magnetoresistance in this alloy system essentially depends on the magnetic precipitate size, annealing temperature and the Ni81Fe19 concen¬tration. The temperature dependence of the magnetoresistance in these films is discussed.

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Acknoledgments

We acknowledge the financial support from the NSERC, Canada, FCAR, Quebec and Martinex Science, Inc.

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Affiliations

  1. Centre for the Physics of Materials and Department of Physics, McGill University, 3600 University St., Montréal, Québec, H3A 2T8, Canada

    X. Bian, A. Zaluska, Z. Altounian & J.O. Strom-Olsen

  2. INRS-Energié et Matériaux, 1650 Montée, St-Julie, Varennes, Québec, J3X 1S2, Canada

    Y. Huai

  3. Departement de Physique, Université de Montréal, C.P.6182, Succ. A, Montréal, Québec, H3C 3J7, Canada

    R.W. Cochrane

Authors
  1. X. Bian
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  2. A. Zaluska
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  3. Z. Altounian
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  4. J.O. Strom-Olsen
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  5. Y. Huai
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  6. R.W. Cochrane
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Correspondence to X. Bian.

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Bian, X., Zaluska, A., Altounian, Z. et al. Giant Magnetoresistance in Granular Ni81Fe19/Ag Formed from Annealed Multilayers. MRS Online Proceedings Library 313, 405–410 (1993). https://doi.org/10.1557/PROC-313-405

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