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Magnetic Exchange Interaction Between Fe(110) Layers across a Ag(111) Intervening Layer

Published online by Cambridge University Press:  26 February 2011

Z. Q. Qiu ,
C. J. Gutierrez ,
H. Tang ,
S. H. Mayer  and
J. C. Walker
Z. Q. Qiu
Affiliation:
The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD
C. J. Gutierrez
Affiliation:
The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD
H. Tang
Affiliation:
The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD
S. H. Mayer
Affiliation:
The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD
J. C. Walker
Affiliation:
The Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD
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Abstract

We have grown a series of Fe(110)/Ag(111)/Fe(110) sandwich structures using a PHI 430B MBE system and analyzed their magnetic properties using transmission Mössbauer spectroscopy. The heterostructures consisted of two 30-monolayer (ML) 56Fe(110) slabs separated by an intervening Ag(111) layer 2 to 35 ML thick, with a 2 ML 57Fe Mössbauer probe layer placed at one of the Fe/Ag interfaces. We found that temperature dependence of the hyperfine field in the probe layer and the saturation hyperfine field value as well stronly depend on the Ag interlayer thickness. This result demonstrates that there exists an interlayer magnetic exchange interaction between the Fe layers across Ag. In addition, preliminary evidence suggests that this is probably an RKKY interaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 171
Copyright
Copyright © Materials Research Society 1992

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