1998 gallium, Ga

gallium, GaI 2200

03 - 027Solubility of Aluminum in the Intermetallic Compound CoGa3. —The influence of the decreasing d-electron concentration on the stability of theCoGa3 structure (tetragonal, P42/mnm) is studied by substitution of Al atomsfor Ga. A lowering of the d-electron concentration by Al substitution is possibleup to a mole fraction of XAl = 0.35. Occupation of Ga positions by Al in theCoGa3 structure leads to a decrease of the unit cell volume with increasing Alcontent. The data of the CoAlxGa3−x phase are compared with those of otherGa-containing representatives of the CoGax structure type. — (MEYER, H.;ELLNER, M.; J. Alloys Compd. 261 (1997) 1-2, 250-253; MPI Metallforsch.,D-70569 Stuttgart, Germany; EN)

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