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Initial Growth and morphology of Ultrathin Magnetic Films Studied Using Scanning Tunneling Microscopy.

Published online by Cambridge University Press:  03 September 2012

David D. Chambliss ,
K.E. Johnson ,
K. Kalki ,
S. Chiang  and
R.J. Wilson
David D. Chambliss
Affiliation:
IBM Research Division, Almadén Research Center, 650 Harry Road, San Jose, California 95120–6099
K.E. Johnson
Affiliation:
IBM Research Division, Almadén Research Center, 650 Harry Road, San Jose, California 95120–6099
K. Kalki
Affiliation:
IBM Research Division, Almadén Research Center, 650 Harry Road, San Jose, California 95120–6099
S. Chiang
Affiliation:
IBM Research Division, Almadén Research Center, 650 Harry Road, San Jose, California 95120–6099
R.J. Wilson
Affiliation:
IBM Research Division, Almadén Research Center, 650 Harry Road, San Jose, California 95120–6099
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Abstract

The room-temperature growth of Fe on Cu(100) has been studied using the scanning tunneling Microscope (STM) to determine low-coverage growth mode and local structures related to the FCC-BCC structural transformation. Results for submonolayer deposition demonstrate an initial interchange of deposited Fe atoms with substrate Cu. This leads to a highly rough Fe-Cu interface and growth characteristics that for different experimental techniques can resemble 3-D island growth or layer-by-layer growth. For a thickness ∼14 Monolayers, the FCC-BCC transition is observed to occur via the formation of fairly large martensitic grains, rather than by a change in atomic aggregation. The implications of the instability of FCC-Fe, as evident in both low- and high-coverage data, are considered.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 713
Copyright
Copyright © Materials Research Society 1993

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References

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