Figure 5
Positions and distribution of atomic distances for Y sites in the refined structure. (a) Selected positions of Y1–Y6 in the unit cell projected along a threefold axis parallel to [111]. An icosahedral shell (Y1–Y4) centered at Y6 is drawn together with their associates related by threefold rotations around the [111] axis passing through Y5. (b) Distribution of Y–Y atomic distances up to 10 Å. Y–Y pairs which contains (Y5) are emphasized in red. (c) Average structure and (d) eight different arrangements at Y3 and Y5 sites. |