EXAFS Study of Local Structure in Amorphous Alloys Cu-Zr,Cu-Ti

The Cu K edge EXAFS of amorphous alloy Cu_xZr_1-x(X=33,50) and Cu₈₀ Ti₂₀ were measured.The structural parameters such as distance between atoms and coordination numbers were obtained. In this paper, investigation of the chemical short range order in the systems of Cux Zr1-x and CuxTi1-x is carried out, and the results are presented.There is no chemical short range order ia 50 at% Cu alloy,while increasing the copper content in this kind of systems increases the tendency to order with unlike atoms and decreasing the copper content willincrease the tendency to order with like atoms.