Patent ID: 7090889

Claim:
A method of forming a thin film of magnesium boride on a silicon substrate, the method comprising: introducing a substrate having a surface consisting essentially of silicon into a chamber; physically generating vapor from at least one source of magnesium, which is within the chamber with the substrate; and introducing at least one boron precursor to the chamber, which combines with the vapor from the at least one source of magnesium to form a thin film of superconductive magnesium boride on the surface consisting essentially of silicon of the substrate, wherein the formed magnesium boride film is substantially free of magnesium-silicon contaminates between the surface consisting essentially of silicon and the magnesium boride film and the pressure of the magnesium vapor is maintained within Log(P)=−9549.5/T+9.1; and Log(P)=−10142/T+8.562, where P represents pressure in units of Torr and T represents temperature in Kelvin.