Ternary system Er–Zn–In in the region 0–33.3 at. % of Er AT 870 K

Abstract

The isothermal section of the Er–Zn–In system was constructed based on X-ray powder data and EDX-analyses at 870 K in the region up to 33.3 at. % Er. Three solid solutions: ErZn 2-1.70 In 0-0.30 (CeCu 2 -type; space group Imma ; а = 4.448–4.594(3), b = 6.984–7.176(5), с = 7.610–7.463(5) A); Er 2 Zn 17-16.54 In 0-0.46 (Th 2 Zn 17 -type; space group R -3 m ; а = 8.9465–8.9704(3), c = 13.1199–13.1320(6) A); ErZn 0-0.88 In 3-2.12 (AuCu 3 -type; space group Pm -3 m ; а = 4.563–4.504(1) A) and one ternary compound with homogeneity region ErZn 1.28-0.80 In 0.72-1.20 (CaIn 2 -type; space group P 6 3 / mmc ; а = 4.513(2)–4.662(1), с = 7.023(3)–7.226(2) A) are formed in the investigated part of this system. The crystal structure of the ErZn 0-0.92 In 3-2.08 solid solution was also determined using X-ray single crystal diffraction data on the sample with composition ErZn 0.87 In 2.13 . Keywords: indium, zinc, crystal structure, homogeneity region, phase equilibrium.