Advanced Study Group Diffusion and Microstructure Analysis (DMA)
"Defect"-induced heat flow and shear modulus relaxation in a metallic glass
A. S. Makarov, V. A. Khonik, G. Wilde, Y. P. Mitrofanov, S. V. Khonik.
Intermetallics, 44, 106-109, (2014)
Calorimetric and shear modulus measurements on bulk glassy Pd40Ni40P20 are performed. The obtained data is used for the calculation of structural relaxation-induced heat flow within the framework of the Interstitialcy theory. A good correspondence between the calculated and experimental heat release and absorption both below and above T-g is found. It is concluded that a description based on the population of "defect" states that are similar to dumbbell interstitials is capable to correctly describe the observed heat flow.