Vanadium–gallium
Vanadium–gallium (VGa) is a superconducting alloy of vanadium and gallium. It is often used for the high field insert coils of superconducting electromagnets. Vanadium–gallium tape is used in the highest field magnets (magnetic fields of 17.5 teslas). The structure of the superconducting A15 phase of VGa is similar to that of the more common NbSn and NbTi. In conditions where the magnetic field is higher than 8 Tesla and the temperature is higher than 4.2 Kelvin, NbSn and VGa see use. The main property of VGa that makes it so useful is that it can be  used in magnetic fields up to about 18 Tesla, while NbSn can only be used in fields up to about 15 Tesla. The high field characteristics can be improved by doping with high-Z elements such as Nb, Ta, Sn, Pt and Pb Physical Properties. VGa has an A15 phase, which makes it extremely brittle. One must be extremely cautious not to over-bend the wire when handling it. Fabrication of superconductive wires or tapes. V3Ga wires can be formed using solid-state precipitation