Abstract
The thermal behavior of Pd40Cu30Ni10P20 and Zr60Ti2Cu20Ni8Al10 bulk metallic glasses has been investigated in situ through the glass transition by means of differential scanning calorimetry, high-temperature X-ray synchrotron diffraction, and electrical resistivity. The temperature dependence of the X-ray structure factor can be well described by the Debye theory within the glassy state with a Debye temperature of θ=296K for Pd40Cu30Ni10P20, and θ=418K for Zr60Ti2Cu20Ni8Al10, respectively. At the glass transition temperature the temperature dependence of the structure changes, pointing to a continuous development of structural changes in the liquid state with temperature. The electrical resistivity behaves similar to the structure factor in accordance with Ziman theory.
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