Nb 3 Ge has been prepared by high rate magnetron sputtering followed by quenching just after deposition. A superconducting onset temperature ( T on ) above 21∼22 K was obtained over a wide band of a substrate temperature ( T D ) 600°∼750°C and that of Ar pressure ( P r ) from 0.1 Torr to 0.5 Torr. The highest T on , T c (the midpoint of transition) and the transition width were 22.5 K, 21.5 K and 1.5 K respectively. The preparation of a uniform and reproducible sample has become very easy. Associated physical properties of a film are described.
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Ōgushi et al. (1980) studied this question.
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