Metallic-type oscillatory interlayer exchange coupling across an epitaxial FeSi spacer.

نویسندگان

  • R R Gareev
  • D E Bürgler
  • M Buchmeier
  • D Olligs
  • R Schreiber
  • P Grünberg
چکیده

We study interlayer exchange coupling in epitaxial Fe/Fe(0.56)Si(0.44)/Fe trilayers. Iron-silicide spacers with high structural and compositional homogeneity for thicknesses up to 34 A are grown by coevaporation from two electron-beam sources. The coupling strength oscillates with spacer thickness for temperatures from 20 to 300 K with two antiferromagnetic maxima at 12 and 26 A, and it clearly increases with decreasing temperature down to 80 K. We conclude that the coupling across ordered Fe(1-x)Si(x) ( x approximately 0.5) is described by the conventional theory of interlayer coupling across metallic spacers.

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عنوان ژورنال:
  • Physical review letters

دوره 87 15  شماره 

صفحات  -

تاریخ انتشار 2001