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Effect of Fe cap layers on the spin density waves in epitaxial Cr(001) films

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7 Author(s)
Bodeker, P. ; Experimentalphysik/Festkörperphysik, Ruhr-Universität Bochum, 44780 Bochum, Germany ; Sonntag, P. ; Schreyer, A. ; Zabel, H.
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We have investigated proximity effects of Fe layers on the spin density waves (SDW) and the concomitant charge density waves or strain waves in thin epitaxial Cr[001] films using synchrotron and neutron scattering. Unlike in bulk Cr we observe a strong anisotropic occupation of the three possible SDWs with their wave vectors Q pointing along the {001} directions. In a pure 3000 Å thick Cr[001] film, the SDW exhibits an almost complete out-of-plane orientation, whereas in a Cr film of the same thickness capped by a 20 Å Fe layer the SDW becomes completely reoriented with Q now propagating in the plane. This SDW is preserved over the entire temperature range from 10 K up to the Néel temperature of about 311 K. © 1997 American Institute of Physics.  

Published in:

Journal of Applied Physics  (Volume:81 ,  Issue: 8 )

Date of Publication:

Apr 1997

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