The uranium differential atomic pair distribution function (DDF) of icosahedral Pd58.8U20.6Si20.6 is shown to compare well with the vertex-vertex distance distribution function of a quasicrystalline lattice up to 40 A. The DDF is also compatible, but less favorably, with the icosahedral glass model, which we point out has a local structure very similar to an ideal quasicrystalline structure up to 50 A or more. Based upon the comparison of theoretical and experimental values of physical density as well, we conclude that the icosahedral Pd58.8U20.6Si20.6 is better described by the quasicrystalline model.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics