Phase equilibria in the Gd–Cr–Ge system at 1070 K

  • M. Konyk Ivan Franko National University of Lviv
  • L. Romaka Ivan Franko National University of Lviv
  • Yu. Stadnyk Ivan Franko National University of Lviv
  • V.V. Romaka Institute for Solid State Research, IFW-Dresden
  • V. Pashkevych Lviv Polytechnic National University
Keywords: Intermetallics, Ternary system, Phase equilibria, Crystal structure

Abstract

The isothermal section of the phase diagram of the Gd–Cr–Ge ternary system was constructed at 1070 K over the whole concentration range using X-ray diffractometry, metallography and electron microprobe (EPM) analysis. Three ternary compounds are realized in the Gd–Cr–Ge system at the temperature of annealing: Gd117Cr52Ge112 (Tb117Fe52Ge112 structure type,  space group Fm-3m, Pearson symbol cF1124, a = 2.8971(6) nm), GdCr6Ge6 (SmMn6Sn6 structure type, space group P6/mmm, Pearson symbol hP16, a = 0.51797(2), c = 0.82901(4) nm) and GdCr1-хGe2 (CeNiSi2 structure type, space group Cmcm, Pearson symbol oS16, a = 0.41569(1)-0.41593(8), b = 1.60895(6)-1.60738(3), c = 0.40318(1)-0.40305(8) nm). For the GdCr1-xGe2 compound the homogeneity range was determined (x=0.73 – 0,69).

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Published
2021-05-08
How to Cite
[1]
KonykM., RomakaL., StadnykY., RomakaV. and PashkevychV. 2021. Phase equilibria in the Gd–Cr–Ge system at 1070 K. Physics and Chemistry of Solid State. 22, 2 (May 2021), 248-254. DOI:https://doi.org/10.15330/pcss.22.2.248-254.
Section
Scientific articles (Physics)

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