Physics:Niobium–germanium

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Niobium-germanium (Nb3Ge) is an intermetallic chemical compound of niobium (Nb) and germanium (Ge). It has A15 phase structure. It is a superconductor with a critical temperature of 23.2 K.

Sputtered films have been reported to have an upper critical field of 37 teslas at 4.2 K.[1]

History

Nb3Ge was discovered to be a superconductor in 1973[2] and for 13 years (until the discovery in 1986 of the cuprate superconductors) it held the record as having the highest critical temperature.[3]

It has not been as widely used for superconductive applications as niobium–tin or niobium–titanium.

Related alloys

Niobium-germanium-aluminium has an upper critical field of about 10 teslas.[4]

References

External links