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Microstructure of FCC/BCC Metal Multilayers

Published online by Cambridge University Press:  28 February 2011

Nigel M. Jennett ,
D.J. Dingley  and
Y. Ando
Nigel M. Jennett
Affiliation:
Bristol University, Dept. Physics, Tyndall Ave, Bristol, BS81TL, England.
D.J. Dingley
Affiliation:
Bristol University, Dept. Physics, Tyndall Ave, Bristol, BS81TL, England.
Y. Ando
Affiliation:
Nagoya University, Dept. Applied Physics, Chikusa-Ku, Nagoya, Japan.
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Abstract

Bilayers of Cu/Fe and Cu/V and multilayers of Ni/Fe have been grown under high vacuum and ultra high vacuum conditions respectively with [111] epitaxy. Multilayer layer thicknesses ranged from 3 monolayers to 15 monolayers per layer. Improved epitaxy of the UHV growth was, we believe, due to the better vacuum although perfect material could only be obtained for growth within a narrow and shifting substrate temperature ‘window’. Possible shortfall in the quality of the Cu backing layer epitaxy was averted by a 2hr anneal at 425°C.

In the Fe/Ni multilayers the Fe was observed to adopt the FCC lattice rather than the equilibrium BCC lattice for layer thicknesses less than 10 monolayers. This change of structure coincided with a reduction in sample magnetic moment per volume attributed to a collapse of the Fe moment to a value 7 times less than bulk.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 160 , 1989 , 183
Copyright
Copyright © Materials Research Society 1990

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