Crystal structures of Hf(T,X)3 and Hf(T,X)2 ternary compounds (TÂ =Â Au, Pt, Pd; XÂ =Â Al, Ga)

Six new ternary hafnium based compounds have been synthesized by arc-melting of the elements. The crystal structure of the investigated intermetallics, determined by X-ray powder diffraction: HfAu0.47Al2.53 (AuCu3 structure type, space group Pm3¯m, a = 4.07187(10) Å), HfAu0.53Ga2.47 (AuCu3 structure type, space group Pm3¯m, a = 4.07278(6) Å), HfPd0.58Ga2.42 (AuCu3 structure type, space group Pm3¯m, a = 4.04296(5) Å), HfAu0.35Al1.65 (MgCu2 structure type, space group Fd3¯m, a = 7.44784(7) Å), HfPd0.33Al1.67 (MgNi2 structure type, space group P63/mmc, a = 5.25266(11), c = 17.1126(5) Å), HfPt0.36Al1.64 (MgNi2 structure type, space group P63/mmc, a = 5.23959(16), c = 17.0717(7) Å).