Pressure Effect on Structural Relaxation of Zr70Cu30 Amorphous Alloy on Annealing

The relaxation behavior of superconducting transition temperature (Tc), which to a great extent may characterize the geometric short-range ordering process in amorphous alloys was examined on Zr70Cu30 metglas on pressure annealing below its gasification temperature. The obtained results show that Tc degradates on raising of annealing temperature and prolongation of tempering. Pressure shows a relation effect to Tc relaxation process, while it still remain a logarithmic character in kinetics as at normal pressure. This behavior could be explained by the reduction of local expanded region in amorphous structure during external pressing.