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Uranium Molybdenum Alloys Synthesized by Ultrafast Cooling, 2013-II

Increasing further molybdenum doping leads to the γ° phase (for 11–12 at.% Mo) and pure cubic γ phase (for 15 at.% Mo). The superconducting transition was investigated by low-temperature resistivity measurements down to 0.3 K in magnetic fields up to 5 T.All the splats become superconducting with Tc in the range from 1.24 K (pure U splat) to 2.11 K (U-15 at.% Mo).

The superconductivity in the γ-phase alloys exhibited a much higher upper critical field than for α-phase material.Electrical resistivity of the γ-alloys (⩾11 at.% Mo) exhibited a negative temperature coefficient from room temperature down to the superconducting transition.
 

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