Interaction of the components in the Gd-Mn-Sn ternary system at 873 and 673 K

L. P. Romaka; Yu. V. Stadnyk; V. V. Romaka; M. Konyk; R. Serkiz

doi:10.15330/pcss.19.1.60-65

Authors

L. P. Romaka Ivan Franko Lviv National University
Yu. V. Stadnyk Ivan Franko Lviv National University
V. V. Romaka Lviv Polytechnic National University
M. Konyk Ivan Franko National University of Lviv
R. Serkiz Ivan Franko National University of Lviv

DOI:

https://doi.org/10.15330/pcss.19.1.60-65

Keywords:

intermetallics, ternary system, phase equilibria, crystal structure, solid solution

Abstract

The interaction of the components in the Gd-Mn-Sn ternary system was studied using the methods of X-ray and microstructure analyses, in the whole concentration range. The phase diagrams of the Gd-Mn-Sn system were constructed at 873 and 673 K. At both temperature of investigation the Gd-Mn-Sn system is characterized by existence of two ternary compounds: GdMn₆Sn₆ (MgFe₆Ge₆ structure type, space group P6/mmm) and Gd₄Mn₄Sn₇ (Zr₄Co₄Ge₇ structure type, space group I4/mmm). The formation of the interstitial solid solution GdMn_хSn₂ based on GdSn₂ (ZrSi₂-type) binary compound was found up to 10 at. % Mn at 873 K and 673 K. The existence of the substitutional solid solution based on GdMn₂ (MgCu₂-type) was observed up to 5 at.% Sn and 3 at. % Sn at 873 K and 673 K, respectively.

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