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Implications of Interfacial Coupling and Strain on the Magnetic and Structural Ordering of Fe3O4/NiO Superlattices

Published online by Cambridge University Press:  15 February 2011

David M. Lind
David M. Lind*
Affiliation:
Florida State University, Department of Physics, and the National High Magnetic Field Laboratory, Tallahassee, FL 32306-3016
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Abstract

Here we review recent work on the preparation and characterization of magnetically ordered oxide Fe3O4/NiO superlattices. The materials were prepared by oxygen plasma-assisted molecular beam epitaxy. Their structural ordering was studied by x-ray, neutron, and RHEED electron diffraction techniques, and the superlattices are found to form as highly coherent strained-layer modulated single crystals. The magnetic ordering studies, using SQUID magnetometry, ferromagnetic resonance, and neutron diffraction, indicated strong interfacial coupling between the ferrimagnetic Fe3O4 layers and the antiferromagnetic NiO layers, with the magnetic ordering in each layer altered by the proximity to the magnetic moments in the adjacent layer. Strain and other layer-thickness effects are also evident in these magnetic layered structures. The special influence of interlayer coupling and strain on the Fe3O4 Verwey transition are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 341: Symposium F – Epitaxial Oxide Thin Films and Heterostructures , 1994 , 15
Copyright
Copyright © Materials Research Society 1994

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References

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