Bruno, C. Chappert, "Oscillatory coupling between ferromagnetic layers separated by a nonmagnetic metal spacer," Physical Review Letters, 67:1602-5, 1991.
Patrick Bruno (Institut d'Electronique Fondamentale, Orsay, France): "Magnetic multilayers are currently attracting considerable interest as new artificial materials. Among them, those consisting of an alternated stacking of a ferromagnetic metal (such as iron, cobalt, or nickel) and a nonmagnetic metal (such as copper, silver, chromium, or ruthenium), with individual layer thicknesses in the range of a few atomic layers (AL), exhibit unique magnetic and electrical properties that make them very promising for the development of novel magnetic sensors and
"In 1990 the observation was published that, in iron/chromium, cobalt/chromium, and cobalt/ruthenium multilayers, the magnetic coupling between two ferromagnetic layers across the nonmagnetic spacer oscillates periodically as a function of the spacer thickness (S.S.P. Parkin, et al., Phys. Rev. Letts., 64:2304, 1990). This announcement stimulated intense experimental and...
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