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Title: Antiferromagnetic interlayer exchange coupling between Fe3O4 layers across a nonmagnetic MgO dielectric layer
Sponsor: Science Foundation Ireland
Author's Homepage:
Keywords: Atomic, molecular and chemical physics
ferromagnetic electrodes
Issue Date: 2008
Publisher: American Institute of Physics
Citation: Wu, H. C.; Arora, S. K.; Mryasov, O. N.; Shvets, I. V., Antiferromagnetic interlayer exchange coupling between Fe3O4 layers across a nonmagnetic MgO dielectric layer, Applied Physics Letters, 92, 18, 2008, 182502
Series/Report no.: Applied Physics Letters;
Abstract: We have investigated the interlayer exchange coupling between the epitaxial spinel Fe3O4 layers across an insulating nonmagnetic MgO spacer. The epitaxial structure used for these investigations was Fe3O4 (10 nm)/MgO (0.8–3 nm)/Fe3O4 (10 nm)/NiO (15 nm) multilayers grown on MgO (100) substrates. We find that the two Fe3O4 layers are antiferromagnetic coupled through the MgO spacer when the MgO thickness is less than 1.5 nm. Furthermore, ab initio calculation of IEC for Fe/MgO/Fe indicates the importance of electrode states, in particular, partial oxidation of the ferromagnetic electrodes.
Description: PUBLISHED
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Appears in Collections:Physics (Scholarly Publications)

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