Paper Title:
Study of the Structure and Magnetic Properties of Fe/Cu Superlattices from First-Principles
  Abstract

The structure and magnetic properties of fcc-Fe/Cu (100) superlattices have been investigated by the first-principles total energy calculation based on density functional theory (DFT). Through the optimization of the structure of Fe/Cu superlattices, it has been found that the interlayer spacing of Cu layers is contracted while the interlayer spacing of Fe layers is expanded. There are no obviously changes of Fe/Cu interfaces for Fe3Cu3 and Fe3Cu5 models. The layer spacing for Fe3Cu5 changes larger than that of Fe3Cu3 model, which results to a slightly larger magnetic moment of FeCu5 than that of Fe3Cu3 model. We also analyze the density of state near the Fermi surface and calculate spin asymmetry factor of each layer in Fe/Cu systems. Based on the two-current model, we evaluate the magnetoresistance ratio 21.8% for Fe3Cu3 and 22.8 % for Fe3Cu5 system.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
2223-2228
DOI
10.4028/www.scientific.net/MSF.546-549.2223
Citation
S. Lu, J. X. Shang, Y. Zhang, "Study of the Structure and Magnetic Properties of Fe/Cu Superlattices from First-Principles", Materials Science Forum, Vols. 546-549, pp. 2223-2228, 2007
Online since
May 2007
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Price
$32.00
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