The Isothermal Section Of Gd-Fe-Ge Ternary System At 773K

The isothermal section of the phase diagram of the Gd-Fe-Ge ternary system at 773K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA) and optical microscopy. The existences of fourteen binary compounds, GdFe₂, GdFe₃, Gd₆Fe₂₃, Gd₂Fe₁₇, Fe₃Ge, Fe₅Ge₃, Fe₆Ge₅, FeGe, FeGe₂, Gd₅Ge₃, Gd₅Ge₄, GdGe, Gd₂Ge₃, Gd₃Ge₅, and four ternary compounds GdFe₂Ge₂, GdFe₆Ge₆, Gd₂FeGe₄, Gd₁₁₇Fe₅₂Ge₁₁₂, were confirmed. This section consists of 21 single-phase regions, 43 two-phase regions, and 23 three-phase regions.