Medium range order from total and partial pair correlation functions of Ni62Nb38 and Ni65B35 metallic glasses

Abstract

Medium range order is analysed for Ni62Nb38 and Ni65B35 metallic glasses from the total and partial atomic pair correlation functions. A new fitting procedure is introduced to determine the extent of atomic correlations and the corresponding value for the structural disorder parameter (in a continuous form) as a function of the chosen window. The partial atomic pair correlation functions in the investigated medium range r-space behave differently and the medium range order is stronger in Ni62Nb38 than in Ni65B35.