Temperature dependence of heat capacity and electrical resistivity of Zr-based bulk glassy alloys

The specific heat at constant pressure (C_p) and electrical resistivity (ρ) of Zr₅₅Al₁₀Cu₃₅, Zr₅₅Al₁₀Cu₃₀Ni₅ and Zr₅₅Al₁₀Cu₂₅Ni₁₀ bulk glassy alloys were measured in the temperature range below 300 K. It was found that the measured C_p of the Zr₅₅Al₁₀Cu_(35-X)Ni_X (X=0, 5 and 10 at.%) alloys are almost the same. The coefficient of electronic specific heat (γ _exp) and the Debye temperature (θ_D) of the Zr₅₅Al₁₀Cu₃₀Ni₅ alloy were found to be 4.05 mJ mol^-1 K^-2 and 278 K, respectively. The ρ of the Zr₅₅Al₁₀ Cu₃₅Ni₅ alloy increased as the temperature decreased in the temperature range between approximately 2.8 and 300 K. The ρ of the alloy with the X=5 decreased abruptly below approximately 2.8 K. The ρ of the Zr₅₅Al₁₀ Cu₃₅ and Zr₅₅Al₁₀Cu₂₅ Ni₁₀ alloys increased with decreasing temperature in the temperature range between 1.8 and 300 K.