CaCu_1.424Fe_0.576Si₂

A CaCu_1.424Fe_0.576Si₂ phase was obtained during high-pressure sinter-ing of an Si-rich quasicrystal composition prealloy with the nominal chemical com-position Si₆₁Cu₃₀Ca₇Fe₂. The obtained phase crystallizes in the space group I4/mmm (No. 139), with a = b = 4.041 Å and c = 10.010 Å. It is isotypic with CaCu₂Si₂ (a = b = 4.06 Å and c = 9.91 Å) [Palenzona et al. (1986 ▸). J. Less-Common Met. 119, 199-209] and CaFe₂Si₂ (a = b = 3.94 Å and c = 10.19 Å) [Hlukhyy et al. (2012 ▸). Z. Anorg. Allg. Chem. 638, 1619-1619]. It features a co-occupancy of Cu and Fe atoms with a ratio of the refined site-occupancy factors of 0.71 (15):0.29 (15).