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Phys. Rev. B 47, 5500–5503 (1993)

[Issue 9 – 1 March 1993 ]

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Structural transition in epitaxial Co-Cr superlattices

W. Vavra

Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109

D. Barlett

Department of Physics and Applied Physics Program, The University of Michigan, Ann Arbor, Michigan 48109

S. Elagoz, C. Uher, and Roy Clarke

Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109

Using a real-time reflection high-energy electron diffraction analysis technique, we show that the epitaxial growth of Co-Cr superlattices incorporates coherent close-packed Cr layers up to a thickness of 6 A-ring. Beyond this thickness there is an abrupt structural transition to bcc (110) Cr in the classic Nishiyama-Wasserman and Kurdjumov-Sachs orientations. Magnetization and magnetoresistance results indicate that interlayer coupling is very weak, which we attribute to the altered crystal structure in the Cr layers.

©1993 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v47/p5500
DOI: 10.1103/PhysRevB.47.5500
PACS: 68.55.-a, 61.14.Hg, 75.50.Rr

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