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                    Phys. Rev. B 48, 14745–14748 (1993)

                       [Issue 19 – 15 November 1993 ]

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Molecular-beam-epitaxy growth and structural characterization of
high-quality single-crystal Co/Cr(001) superlattices

     W. Donner, N. Metoki, A. Abromeit, and H. Zabel
     Institut fur Experimentelle Festkorperphysik, Ruhr-Universitat Bochum,
     D-44780 Bochum, Germany

Received 15 July 1993

High-quality single-crystal Co/Cr(001) superlattices with layer thicknesses
of 5–50 A-ring have been grown by molecular-beam epitaxy. In contrast to
other investigations we found that hcp Co grows with its (11.0) plane
parallel to Cr(001). The Co layers exhibit a remarkable expansion of
[approx equals] 6% perpendicular to the film plane, indicating a structural
change in direction to the bcc phase. However, in-plane diffraction
experiments confirmed that the hexagonal symmetry remains for Co layer
thicknesses down to 4 A-ring.

©1993 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v48/p14745
DOI: 10.1103/PhysRevB.48.14745
PACS: 68.55.-a, 64.60.My, 68.35.Rh
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