IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Magnetic Interfaces and Nanostructures Friday Sessions
       Session MI+SS-FrM

Invited Paper MI+SS-FrM1
Novel Spin Structures in Fe@sub 3@O@sub 4@/CoO and Fe@sub 3@O@sub 4@/NiO Superlattices

Friday, November 2, 2001, 8:20 am, Room 110

Session: Magnetic Thin Films and Surfaces II
Presenter: Y. Ijiri, Oberlin College
Authors: Y. Ijiri, Oberlin College
J.A. Borchers, National Institute of Standards and Technology
R.W. Erwin, National Institute of Standards and Technology
S.H. Lee, National Institute of Standards and Technology
K.V. O'Donovan, National Institute of Standards and Technology
P.J. van der Zaag, Philips Research Laboratories
L.F. Feiner, Philips Research Laboratories
R.M. Wolf, Philips Research Laboratories
D.M. Lind, Florida State University
P.G. Ivanov, Florida State University
Correspondent: Click to Email
Using polarized neutron scattering methods, we have probed the magnetic ordering in MBE-grown Fe@sub 3@O@sub 4@/CoO and Fe@sub 3@O@sub 4@/NiO superlattices. Despite significant differences between the spinel ferrite and the rock salt monoxides, it is possible to grow high-quality epitaxial structures for these materials as a result of good oxygen sublattice matching. We have observed for these superlattices substantial changes in the spin structures for both the ferrimagnetic Fe@sub 3@O@sub 4@ and the antiferromagnetic monoxide (CoO or NiO). In particular, we have found new magnetic easy axes along with significant differences in the polarization characteristics for these thin films. The unusual structures are discussed in terms of the role of strain and exchange coupling between disparate magnetic materials.