A nanoglass alloying immiscible Fe and Cu at the nanoscaleElectronic supplementary information (ESI) available. See DOI: 10.1039/c5nr01406a

Synthesized from ultrafine particles with a bottom-up approach, nanoglasses are of particular importance in pursuing unique properties. Here, we design a metallic nanoglass alloy from two components of ∼Cu 64 Sc 36 and ∼Fe 90 Sc 10 nanoglasses. With nanoalloying mutually immiscible Fe and Cu, the properties of the nanoglass alloys can be tuned by varying the proportions of the ∼Fe 90 Sc 10 component. This offers opportunity to create novel metallic glass nanocomposites and sheds light on building a structure-property correlation for the nanoglass alloys. Synthesized from ultrafine particles with a bottom-up approach, nanoglasses are of particular importance in pursuing unique properties. From different kinds of nanoglasses with immiscible metals, nanoglass alloys are created, which may open an avenue to an entirely new world of solid solutions. These new solid solutions are likely to have properties that are yet unknown in today's alloys.