MAGNETIC COUPLING IN FE NB MULTILAYERS - A NEUTRON REFLECTIVITY STUDY/

Authors
REHM C NAGENGAST D KLOSE F MALETTA H WEIDINGER A
Citation
C. Rehm et al., MAGNETIC COUPLING IN FE NB MULTILAYERS - A NEUTRON REFLECTIVITY STUDY/, Europhysics letters, 38(1), 1997, pp. 61-66
Citations number
16
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
38
Issue
1
Year of publication
1997
Pages
61 - 66
Database
ISI
SICI code
0295-5075(1997)38:1<61:MCIFNM>2.0.ZU;2-U
Abstract
Fe/Nb multilayers with different Nb layer thicknesses were investigate d by neutron reflectometry. In accordance with previous work, we find that magnetic coupling of the Fe layers oscillates between ferro- and antiferromagnetic as a function of the Nb spacer layer thickness for t (Nb) < 24 Angstrom. However, for larger Nb thicknesses only antiferrom agnetic ordering, probably caused by dipolar coupling, is observed. Ma gnetic domains have lateral extensions of 0.7 to 10 mu m as derived fr om off-specular reflectivity; the domain sizes oscillate correlated wi th the strength of the coupling.