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Journal of Applied Physics -- May 15, 1993 -- Volume 73, Issue 10, pp. 6204-6206

Magnetic structure of Fe/Cr/Fe trilayers

Y. U. Idzerda

Naval Research Laboratory, Washington, D.C. 20375

L. H. Tjeng, H.-J. Lin, G. Meigs, and C. T. Chen

AT&T Bell Laboratories, Murray Hill, New Jersey 07974

J. Gutierrez

Naval Research Laboratory, Washington, D.C. 20375
Department of Physics, Southwest Texas State University, San Marcos, Texas 78666

The magnetic structure of Cr films deposited on single crystal Fe(001)/GaAs(001) substrates is investigated by soft x-ray magnetic circular dichroism (SXMCD) of the L₂ and L₃ absorption edges. We find that 0.25 ML Cr coverages result in Cr moments aligned with each other and antialigned to the underlying Fe moment direction. The Cr moment is measured to be 0.6±0.2 µ_B. Additional Cr deposition results in a monotonically reducing averaged moment consistent with the island growth of ferromagnetic Cr sheets of a single layer, antialigned with adjoining sheets. SXMCD measurements of the trilayer structures clearly show the antiferromagnetic coupling of the two Fe films through the interlying Cr film. Journal of Applied Physics is copyrighted by The American Institute of Physics.

DOI: 10.1063/1.352698
PACS: 75.70.Fr, 78.70.Dm, 75.25.+z        Additional Information

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