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Structural Characterization of Fe3O4–NiO Superlattices Using High-reSolution Transmission Electron Microscopy

Published online by Cambridge University Press:  31 January 2011

A. Rečnik ,
D. L. Carroll ,
K. A. Shaw ,
D. M. Lind  and
M. Rühle
A. Rečnik
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 92, 70174 Stuttgart, Germany and Ceramics Department, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
D. L. Carroll
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 92, 70174 Stuttgart, Germany
K. A. Shaw
Affiliation:
Department of Physics and MARTECH, Florida State University, Tallahassee, Florida 32306
D. M. Lind
Affiliation:
Department of Physics and MARTECH, Florida State University, Tallahassee, Florida 32306
M. Rühle
Affiliation:
Max-Planck-Institut für Metallforschung, Seestrasse 92, 70174 Stuttgart, Germany
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Abstract

Superlattices of Fe3O4–NiO layers have been studied by high-resolution transmission electron microscopy (HRTEM). These superlattices are grown by oxygen-plasma-assisted molecular-beam epitaxy (MBE) on (001) oriented MgO substrates, and exhibit a high degree of ordering at the interfaces between the interlayers. The lack of misfit dislocations at the Fe3O4–NiO interfaces suggeststhat lattice strain is largely accommodated by changes in the lattice spacing. By quantitative HRTEM analysis of Fe3O4–NiO interfaces, possible atomic models are discussed, having implications in magnetic ordering and spin exchange mechanisms for such interlayer systems.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 8 , August 1997 , pp. 2143 - 2151
Copyright
Copyright © Materials Research Society 1997

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