NEW EVIDENCE OF STABILIZATION OF HIGH T_c A15 Nb₃Ge PHASE BY Nb₅Ge₃

Many scientists hypothesized that the presence of oxygen is necessary for the formation and stabilization of the metastable high T_c A15 Nb₃Ge phase in Nb-Ge films. In our previous work we proposed that a certain amount of Nb₅Ge₃ may play a role in stabilizing the high T_c A15 phase. New experimental results of induction measurement on the Nb-Ge films support our proposal.