Oscillatory magnetic coupling in Ag/Ni superlattices

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Abstract
Ag/Ni superlattices have been prepared by triode dc sputtering on glass substrates at 100 K. X-ray diffractometry with the scattering vector perpendicular to the superlattice plane suggests structural coherence and interface sharpness whatever the thickness of the elemental layers. All the samples present (111) textures for both Ag and Ni. Magnetic measurements performed with a superconducting quantum interference device magnetometer indicate in-plane anisotropy of the magnetization and oscillatory interlayer magnetic coupling. This is confirmed by magnetoresistance measurements.