Title :
A phase shift in the coupling in Co1-xAgxCu/Co1-xAgx systems
Author :
Zhou, L. ; Wigen, P.E. ; Stamps, R.L. ; Zhang, Z. ; Ounadjela, K. ; Hehn, M. ; Gregg, J.
Author_Institution :
Dept. of Phys., Ohio State Univ., Columbus, OH, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
Upon the addition of Ag impurities in the Co layers of high quality molecular-beam-epitaxy grown Co/Cu(111) trilayers, the antiparallel coupling observed in the Co/Cu/Co trilayers for tCu <12 Å has been transformed to a parallel coupling which appears as a significant shift in the phase of the interlayer coupling. In addition, the amplitude of the exchange coupling oscillations appears to decrease exponentially with increasing Cu layer thickness
Keywords :
cobalt alloys; copper; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; magnetic epitaxial layers; magnetic impurities; magnetic multilayers; magnetisation; metallic superlattices; silver alloys; Ag impurities; Co1-xAgxCu/Co1-xAgx systems; CoAg-Cu-CoAg; Cu layer thickness; antiparallel coupling; exchange coupling oscillations; interlayer coupling; molecular-beam-epitaxy grown Co/Cu(111) trilayers; parallel coupling; phase shift; Anisotropic magnetoresistance; Impurities; Magnetic anisotropy; Magnetic resonance; Magnetic separation; Magnetization; Optical coupling; Optical films; Perpendicular magnetic anisotropy; Superconducting magnets;
Journal_Title :
Magnetics, IEEE Transactions on
