标题：Nanoscale Inhomogeneities in the Glass Transition of Zr41.2Ti13.8Cu12.5Ni10Be22.5 Bulk Metallic Glass
通讯作者地址：[Sun, MH]Harbin Normal Univ, Dept Phys, Harbin 150025, Peoples R China.
摘要：By using small-angle x-ray scattering technique, correlation lengths of the density fluctuation are determined for the bulk metallic glass Zr41.2Ti13.8Cu12.5Ni10Be22.5 around the glass transition temperature Tg. Nanoscale inhomogeneities were found to exist in the supercooled liquid and glass state. The correlation length was found to vary with temperature T in an exponential law δ(T)=δ0 + A1 exp[-(T - T∞)/T1], where T∞ is the Vogel temperature, and parameters δ0, A1 and T1 were simulated to be 16.45 nm, 1.88 × 10^29 nm, and 9.65 K, respectively, in the temperature region from Tg to Tg +80 K. The correlation length of the density fluctuation obtained by the small-angle x-ray scattering method can be considered as the characteristic length of glass transition.