Superconductivity in U-T Alloys (T = Mo, Pt, Nb, Zr) Stabilized in the Cubic gamma-U Structure

Abstrakt

Using ultrafast cooling (with the cooling rate up to 10(6) K/s) helps to minimize the T-alloying concentration (T = Mo, Pt, Pd, Nb, Zr) necessary to retain the gamma-U phase down to low temperatures. All investigated splat-cooled U-T alloys become superconducting with T-c in the range of 0.61-2.11 K.

The bulk character of superconductivity can be concluded for some of the splats when comparing the specific-heat anomaly at T-c with the BCS theory prediction.

Klíčová slova

• electrical-resistivity
• transition
• uranium