The role of oxygen in the formation of the IMb3Ge film structure with high critical temperatures
Golovashkin A.I. , Pechen' E.V.
We show that in order to form superconducting Nb3Ge films with record high Tc, oxygen, which stabilizes the A-15 lattice at the film boundary and facilitates the occurence of seeds of the high-temperature phase, must be present. Total superconductivity was attained at 22.2 °K, the critical temperature at Tc = 22.5 °K and the onset of superconducting transition at 23.2 °K.