Abstract
The authors present data on the effects of alpha irradiation and H implantation on the electrical resistivity, rho , and the superconducting Tc of Bi3Ni. Two regimes of flux can be distinguished. At low doses, a large resistivity increase is due to atomic disorder irrespective of the impinging ion ( alpha or H); at the same time, only a slight Tc decrease is measured, in contrast with what is observed in A15 compounds. At high doses, specific effects due to H implantation are seen, probably implying significant modification of the electronic structure. There are indications that H enters the lattice as an interstitial, but that it also forms microbubbles.
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