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The Influence of Grain-Boundary Structural Disorder on the Magnetic Properties of Nanocrystalline Nickel

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Abstract

The influence of grain boundaries on the magnetic properties of nanocrystalline nickel, in particular the Σ = 3 and Σ = 5 special grain boundaries and the extreme case of a purely amorphous sample, has been investigated. Our calculations reveal that the magnetic moment is rather insensitive to the structural disorder varying by at most 15 %. These results correlate extremely well with the recent observation in electrodeposited nickel that the magnetic moment depends very little on grain size, down to about 10 nm.

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Acknowledgments

The authors wish to acknowledge financial support from the Natural Sciences and Engineering Research Council of Canada, the Ontario Centre for Materials Research, and the “Fonds pour la formation de chercheurs et l’aide à la recherche” of the Province of Québec.

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Authors and Affiliations

  1. Department of Materials and Metallurgical Engineering, Queen’s University, Kingston, Ontario, Canada, K7L 3N6

    Barbara Szpunar & Uwe Erb

  2. Department of Metallurgy and Materials Science, University of Toronto, Toronto, Ontario, Canada, M5S 1A4

    Karl T. Aust

  3. Ontario Hydro Research Division, 800 Kipling Ave, Toronto, Ontario, Canada, M8Z 5S4

    Gino Palumbo

  4. Département de physique et Groupe de recherche en physique et technologie des couches minces, Université de Montréal, Case postale 6128, Succursale A, Montréal, Québec, Canada, H3C 3J7

    Laurent J. Lewis

Authors
  1. Barbara Szpunar
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  2. Uwe Erb
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  3. Karl T. Aust
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  4. Gino Palumbo
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  5. Laurent J. Lewis
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Szpunar, B., Erb, U., Aust, K.T. et al. The Influence of Grain-Boundary Structural Disorder on the Magnetic Properties of Nanocrystalline Nickel. MRS Online Proceedings Library 318, 477–482 (1993). https://doi.org/10.1557/PROC-318-477

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  • DOI: https://doi.org/10.1557/PROC-318-477

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