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Abstract:
Two homeotypical phases occur at the mole fraction x(Al)approximate to
0.75 in the ternary system Co-Ni-Al: the pseudoternary intermetallic
compound (Co,Ni)(4)Al-13(h) (space group C2/m, Pearson code mC(34-1.8))
[Notation, according to Parthe et nl. (1993). TYPIX, Standardized Data
nod Crystal Chemical Characterization of Inorganic Structure Types
(Springer, Berlin), Vol. 2, p. 269, Vol. 3, p. 1055]. For structures
with partly occupied sites, the hybrid Pearson code is given as (the sum
of the multiplicities of all, fully or partly occupied sites in the unit
cell)-(number of structural vacancies in the unit cell)], and the
ternary compound Co2NiAl9 (Immm, oI96). Powder diffraction data are
reported for these materials or phases-from the viewpoint of phase
equilibria-immediately neighboring phases. (C) 1999 International Centre
for Diffraction Data. [S0885-7156(98)00203-6].
