The structure type ZrAl0.23Ge1.77


  • D. Maryskevych Ivan Franko National University of Lviv, Lviv, Ukraine
  • Ya. Tokaychuk Ivan Franko National University of Lviv, Lviv, Ukraine
  • L. Akselrud Ivan Franko National University of Lviv, Lviv, Ukraine
  • R. Gladyshevskii Ivan Franko National University of Lviv, Lviv, Ukraine



Zirconium, Aluminum, Germanium, X-Ray single-crystal diffraction, Ternary compound, Crystal structure, Intergrowth structure


The new ternary intermetallic compound ZrAl0.23Ge1.77 was observed after annealing at 600°C, and its crystal structure was determined by X-ray single-crystal diffraction. The structure (own structure type, Pearson symbol tI32-8, space group I41/amd, a = 3.8013(2), c = 29.893(3) Å, Z = 4) is a variant with partial positional disorder of the pseudo-binary structure type Zr0.75AlSi1.25. The structures are members of the family of linear intergrowth structures composed of AlB2-type slabs (layers of centered trigonal prisms) and CaF2-type slabs (layers of empty “half octahedra”), here in the ratio 1:2. The structure of ZrAl0.23Ge1.77 is characterized by statistical occupation by Al and Ge of one of the sites forming the CaF2-type slabs and positional disorder of the Ge atoms that form zig-zag chains along the crystallographic direction [100].


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How to Cite

Maryskevych, D., Tokaychuk, Y., Akselrud, L., & Gladyshevskii, R. (2023). The structure type ZrAl0.23Ge1.77. Physics and Chemistry of Solid State, 24(3), 448–452.



Scientific articles (Chemistry)