Abstract
The fcc Zr2Ni and MgCu2-type phases, as primarycrystallization phases from some bulk amorphous alloys, have similarBergman clusters in the first-two-shell atomic arrangement, which alsoappears in the hp MgZn2-type Laves phase coexisting withicosahedral quasi-crystals in the TiZrNi system. Therefore, Bergmancluster may be a bridge linking bulk amorphous alloys and quasi-crystals.The stability of the Bergman clusters Zr31Ni14,Mg31Cu14 and Mg18Zn27 can be reflected by density ofstates at the Fermi level and distribution of charge density on theplane of (100) calculated by local density functional theory.
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