| Issue |
Europhys. Lett.
Volume 60, Number 5, December 2002
|
|
|---|---|---|
| Page(s) | 731 - 736 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00369-6 | |
| Published online | 01 November 2002 | |
Interface quality and short-range order of 
(001)
superlattices as determined by CEMS
Department of Physics, Uppsala University - Box 530,
SE-751 21 Uppsala, Sweden
Corresponding author: gabriella.andersson@fysik.uu.se
Received:
28
June
2002
Accepted:
16
September
2002
The dependence of the interface quality on growth temperature in
(001) single-crystal multilayers was
investigated using conversion electron Mössbauer
spectroscopy (CEMS) and X-ray diffraction (xrd). The samples,
with 7 atomic layers (
) of isotope-enriched 
and 5 of 
, were grown by dc magnetron sputtering
onto 
(001) substrates at temperatures 
in
the range 230–430
. The xrd results confirmed the
previous findings on optimum temperature for sharp interfaces
(
–330), whereas the CEMS data
suggested that the short-range order was similar in all samples
with 
. The film grown at
430 was significantly different, with clear signs
of alloying throughout the layers. Additional
magneto-optical measurements showed the expected ferromagnetic
behaviour.
PACS: 68.35.Ct – Interface structure and roughness / 61.18.Fs – Magnetic resonance techniques; Mössbauer spectroscopy / 75.70.Cn – Interfacial magnetic properties (multilayers, superlattices)
© EDP Sciences, 2002
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