Time-Temperature Superposition of Structural Relaxation in a Viscous Metallic Liquid
نویسندگان
چکیده
Bulk metallic glass-forming Pd40Ni10Cu30P20 has been investigated in its equilibrium liquid by quasielastic neutron scattering. The quasielastic signal exhibits a structural relaxation as known from nonmetallic viscous liquids. Even well above the melting point, the structural relaxation is nonexponential and obeys a universal time-temperature superposition. From the mean relaxation times average diffusivities have been determined, resulting in values on a 10210 m2 s21 scale, 3 orders of magnitude slower than in simple metallic liquids.
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