Study of layered and coevaporated V(Mo)N and (V/Si)N films

Layered and coevaporated V/Mo samples were nitrided and their T c 's and spin-orbit scattering rates were compared. This is of Interest because of the close lattice match of VN with the postulated high T c of cubic MoN. In no case was a T c higher than that of VN obtained. The spin-orbit scattering rate was found to be larger in the layered (V/Mo)N samples than in the coevaporated ones. We have compared (V/Mo)N and similarly made (V/Si)N multilayer films with theories for the critical field of such structures. Evidence for dimensional crossover was seen in the parallel critical field curve of (V/Mo)N films. Also, the T c of thin (V/Si)N multilayers was found to be dependent on the Si layer thickness.