Comparative study of relaxation behavior of glassy “usual” Pd40Cu30Ni10P20 and “unusual” Pd40Cu40P20 by measurements of the electrical resistance

Electrical Resistance Relaxation in La₅₅Al₂₅Ni₁₀Cu₁₀ Bulk Metallic Glass

“…It is always thought that the relative resistance change upon structural relaxation reflects not only the change of the relative resistivity but also depends on sample's geometry such as relative volume change [14]. However, Khonik and co-workers suggested that aging-induced density changes do not constitute a reason for the changes of the electrical resistance comparing two Pd-based metallic glass with different glass forming ability [15]. The basic features of such complicated behaviors have been attributed to different origins, such as free volume relaxation [13,16], compositional/topological short-range ordering [17]; some peculiarities of the activationenergy spectra [18] and change of the structural factors implied by the Ziman theory for the resistivity of liquid metals [13,19,20].…”

Mechanical spectroscopy study of the Cu36Zr59Al5 and Cu54Zr40Al6 amorphous alloys

“…This structural relaxation can be understood as a decrease of the concentration of interstitialcy-like defects frozen-in upon glass production in which the concentration depends on the quenching temperature 10,11 . In order to understand the behavior of structural relaxation in the metallic glasses, many methods of characterization have been used, such as differential scanning calorimetry, measurement of electrical resistivity, ultrasound and Brillouin scattering among others [12][13][14][15] . Thus, methods that involve internal friction measurements, whose magnitude is related to mechanical energy loss due to phase transformations or by interaction with defects in the material commonly used in crystalline alloys 16,17 , can be of great interest in the study of the transition from the glassy to crystalline state in bulk metallic glasses 18 .…”