Abstract
Oscillatory interlayer coupling is observed for bcc ${\mathrm{Co}}_{75}{\mathrm{Fe}}_{25}∕\mathrm{Au}∕{\mathrm{Co}}_{75}{\mathrm{Fe}}_{25}$ and fcc ${\mathrm{Co}}_{75}{\mathrm{Fe}}_{25}∕\mathrm{Cu}∕{\mathrm{Co}}_{75}{\mathrm{Fe}}_{25}$ epitaxial trilayer systems. The two crystalline forms of ${\mathrm{Co}}_{75}{\mathrm{Fe}}_{25}$ are achieved by controlled epitaxy using suitable substrates to induce the desired crystal structure. Interlayer coupling is studied as a function of the spacer layer thickness and the experimental results indicate that the period of oscillations in the interlayer coupling is largely independent of the ferromagnetic material structure and is determined instead by the spacer layer material, in agreement with theoretical models.
Published Version
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