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STRAIN IN MAGNETIC EuS/SrS SUPERLATTICES INVESTIGATED BY He ION CHANNELING

Published online by Cambridge University Press:  28 February 2011

S. MANTL ,
CH. BUCHAL ,
B. STRITZKER  and
B. SAFTIC
S. MANTL
Affiliation:
Kernforschungsanlage Jülich, IFF, P.O. Box 1913, D-5170 Jülich, FRG
CH. BUCHAL
Affiliation:
Kernforschungsanlage Jülich, IFF, P.O. Box 1913, D-5170 Jülich, FRG
B. STRITZKER
Affiliation:
Kernforschungsanlage Jülich, IFF, P.O. Box 1913, D-5170 Jülich, FRG
B. SAFTIC
Affiliation:
Kernforschungsanlage Jülich, IFF, P.O. Box 1913, D-5170 Jülich, FRG
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Abstract

He ion channeling experiments indicate that molecular beam grown epitaxial multilayers of EuS/SrS on (111) Si are under strain. Angular scans of the normalized He backscattering yields showed that inclined [100] directions vary by 0.28 ± 0.05º between the first two 30 nm thick layers due to tetragonal distortion of the EuS and SrS lattices. Comparison of theoretical estimated kink angles and experimental results indicated cormplete elastic accommodation of the 0.9 % lattice mismatch between EuS and SrS in the superlattice. In contrast, thin EuS layers on (111) Si are epitaxial but incommensurate because of the large 10 % lattice mismatch.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 56: Symposium H – Layered Structures and Epitaxy , 1985 , 195
Copyright
Copyright © Materials Research Society 1986

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References

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