METALLIC MULTILAYERS AND HYDROGEN

The interaction of hydrogen with metallic layer structures and the cha nge of properties of these structures upon hydrogen charging are revie wed. Drastic deviations from the bulk behaviour are observed. The devi ations can be traced back to the elastic boundary conditions and to th e electron transfer at the interfaces between the different materials. Examples of improvements of the structure or the electronic propertie s of the layers by hydrogen incorporation are reported. Presently, sev eral groups are trying to change the magnetic coupling of magnetic lay ers by introducing hydrogen in the non-magnetic spacer layer.