Phase equilibrium diagram of Y-Cu-Sb system at 870 K


  • L. Romaka Ivan Franko National University of Lviv, Lviv, Ukraine
  • Yu. Stadnyk Ivan Franko National University of Lviv, Lviv, Ukraine
  • V.V. Romaka Institute for Solid State Research, IFW-Dresden, Dresden, Germany
  • A. Zelinskiy Ivan Franko National University of Lviv, Lviv, Ukraine
  • P. Klyzub Ivan Franko National University of Lviv, Lviv, Ukraine
  • A. Horyn Ivan Franko National University of Lviv, Lviv, Ukraine



intermetallics, ternary system, phase equilibria, crystal structure


The interaction of the components in the Y-Cu-Sb ternary system was investigated using the methods of X-ray phase analysis, microstructure, and energy-dispersive X-ray spectroscopy in the whole concentration range at 870 K. At the temperature of investigation Y-Cu-Sb system is characterized by the formation of three ternary compounds: Y3Cu22Sb9 (Dy3Cu20+xSb11-x structure type, space group F-43m, a=1.6614(3) nm), Y3Cu3Sb4 (Y3Au3Sb4 structure type, space group I-43d, а=0.95357(5) nm), YCuSb2 (HfCuSi2 structure type, space group P4/nmm, a=0.42580(1), c=0.98932(3) nm). The solubility of copper in the binary compound YSb (NaCl structure type) extends up to 8 at. %.


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How to Cite

Romaka, L., Stadnyk, Y., Romaka, V., Zelinskiy, A., Klyzub, P., & Horyn, A. (2023). Phase equilibrium diagram of Y-Cu-Sb system at 870 K. Physics and Chemistry of Solid State, 24(4), 610–615.



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