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Published on: September 27, 2018
A new ternary compound with the BGa8Ir4 structure type in the Al-Au-Ir system
Joris Kadok1, Marie Cécile de Weerd1, Pascal Boulet1
1Institut Jean Lamour (UMR7198 CNRS, Université de Lorraine), Campus ARTEM 2 allée André Guinier, 54011 Nancy Cedex, France.
Abstract:
Following the recent determination of the Al3AuIr structure, a new ternary phase has been identified in the Al-Au-Ir phase diagram. It has a chemical composition Al9(Au;Ir)4 with an apparently low gold content. Its crystal structure has been determined with single-crystal X-ray diffraction. The new compound crystallizes in the tetragonal crystal system and has been successfully solved in space group I41/acd (Pearson symbol tI104) with lattice parameters a = 8.6339 (2) and c = 21.8874 (7) Å. Atomic environments are described as well as similarities with the BGa8Ir4 compound.
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