The ternary Eu-Cu-Si system at 400°C
Chem. Met. Alloys 1 (2008) 343-347
Bohdana BELAN, Mykola MANYAKO, Roman GLADYSHEVSKII
Based on X-ray diffraction and microstructure analysis the isothermal section at 400°C of the phase diagram of the system Eu-Cu-Si was built. The compound EuCu2Si2 (CeAl2Ga2 structure type) was confirmed and its homogeneity region was determined (EuCu2.25-1.50Si1.75-2.50). The compound EuCu0.80-0.20Si1.20-1.80 (AlB2 structure type) is also characterized by a variable content of copper and silicon. In addition, four new compounds with unknown structure were found in this system. The effective valence of europium was studied.
Isothermal section of the phase diagram of the Eu-Cu-Si system at 400°C.
Isothermal section / Crystal structure / Effective valence