Phase equilibria in the NiXLa2X3Ga(In)2X3 (X = S, Se) systems and crystal structure of the La3NiGaS7 compound

 

Chem. Met. Alloys 9 (2016) 00-00

 

Nazar BLASHKO, Ivan OLEKSEYUK, Anatoliy FEDORCHUK, Oleg MARCHUK

 

The isothermal sections of the quasi-ternary NiXLa2X3Ga(In)2X3 (X = S, Se) systems at 770 K were constructed using X-ray diffraction. The crystal structure of the quaternary compound La3NiGaS7 (structure type La3MnGaS7, Pearson symbol hP24, space group P63, a = 1.01605(4), = 0.60397(3) nm, RI = 0.0856, Rp = 0.1897) was determined by X-ray powder diffraction.

 

 

Unit cell and coordination polyhedra of the atoms in the La3NiGaS7 structure.

 

Keywords

Rare-earth elements / X-ray powder diffraction / Crystal structure