Abstract
Superconductivities and structural properties of Ti—Zr—Ta ternary alloys are extensively investigated. The TiZrTa sample has a cubic structure (β-phase) and shows a sharp superconducting transition at a critical temperature (Tc) of about 7.3 K. In addition, two series of Ti—Zr—Ta alloys, with nominal compositions of Ti65−xZr35Tax and TixZr65−xTa35 respectively, are prepared, and their superconductivities and crystal structures change regularly with the chemical composition. Our experimental study also indicates that the annealing processing of this kind of material can cause the transition temperature to increase and the highest Tc is observed to be about 8.3 K in annealed samples.
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