Phase equilibria
and crystal structure of the ternary compounds of the La–Ag–Ga
system in the region up to 50.0 at.% of La
Chem.
Met. Alloys 3 (2010) 24-28
https://doi.org/10.30970/cma3.0118
Tetyana KRACHAN, Bogdan STELMAKHOVYCH
Phase diagrams of the La–Ag–Ga
system at 500°Ñ (La content 0-50.0 at.%) and 300°Ñ (La
content 0-33.3 at.%) have been built using X-ray structure and phase analysis.
The existence of the ternary gallide LaAg1.0-0.5Ga3.0-3.5
(BaAl4-type) has been confirmed and the atomic coordinates,
displacement parameters and site occupancies have been determined. A new
ternary compound, La(Ag0.51Ga0.49)11
with BaHg11-type structure (space group Pm3m, a = 0.87619(1) nm, wRp = 0.072),
has been discovered at 300°Ñ.
Part of the phase diagram isothermal
section of the of the La–Ag–Ga system at 300°C and 500°C.
Keywords
La–Ag–Ga alloys /
Phase equilibria / Ternary intermetallic
compounds / Crystal structure / X-ray diffraction