BEHAVIORS OF T-C AND H-C2 IN NB CO AND V/CO MULTILAYERS/

The basic superconducting properties such as T-c and H-c2 have been in vestigated for the sputter-deposited, proximity-coupled Nb/Co and V/Co superconductor/ferromagnet multilayers. T-c as a function of Co-thick ness (d(Co)) for both Nb/Co and V/Co first decreases rapidly in the ve ry thin d(Co) region, followed by the nearly flat region on thicker si de. This behavior in T-c is closely related to the dimensionality in t he superconducting characteristics of the present multilayers.