gamma-U phase in U-Pt system retained to low temperatures by means of rapid cooling

Abstract

Splat-cooling technique with a cooling rate better than 10(6) K/s helps to increase the Pt solubility in the (cubic) gamma-U phase and retain such gamma-U phase in U-15 at.% Pt splat down to low temperatures. The splatcooled U-Pt alloys are very stable in exposing to air.

The gamma-U phase (U-15 at.% Pt splat) is characterized by a negative temperature coefficient of the resistivity (dp/dT < 0). The splats become superconducting below 1.1 K.

Keywords

• Crystal structure
• gamma-U phase
• Electrical resistivity
• Superconductivity