Patent ID: 7544273

Claim:
A deposition method of forming a film by scattering a deposition material from a surface of a target material and growing the scattered deposition material on a surface of a substrate, comprising the steps of: orienting said substrate in a first state in which the surface of said substrate forms a prescribed angle with respect to the surface of said target material, where a shortest distance between one end of said substrate and said target material is smaller than a shortest distance between the other end of said substrate and said target material; forming a first film on said substrate by moving said substrate along a linear path through a region of scattered deposition material while maintaining the orientation of the substrate in said first state to produce a first film thickness that is larger at said one end than the first film thickness at the other end; orienting said substrate in a second state in which the surface of said substrate forms said prescribed angle with respect to the surface of said target material, where a shortest distance between said one end of said substrate and said target material is larger than a shortest distance between said the other end of said substrate and said target material; forming a second film on said first film by moving said substrate along a linear path through a region of scattered deposition material while maintaining the orientation of the substrate in said second state to produce a second film thickness that is larger at said other end than the second film thickness at the one end; forming at least one superconducting layer on said second film; and wherein said step of forming at least one superconducting layer includes forming at least one superconducting layer by any of ion beam sputtering, sputtering, thermal co-evaporation, metal organic decomposition, molecular beam epitaxy, metal organic chemical vapor deposition, electron beam evaporation, and laser ablation.