solid solutions of Ti in the
binary compounds R3Ga2 (R = Y, Er)
Chem.
Met. Alloys 6 (2013) 225-229
https://doi.org/10.30970/cma6.0287
Anastasiya
KOTSYUBAYLO, Anatoliy ZELINSKIY, Yaroslav
TOKAYCHUK, Roman GLADYSHEVSKII
The crystal structures of two samples belonging
to the substitutional solid solutions of Ti (1.6 at.% at 600ºC) in the binary gallides
Y3Ga2 and Er3Ga2 were refined from
X-ray powder diffraction data. Both solid solutions belong to the structure
type Gd3Ga2: Pearson symbol tI80, space group I4/mcm, a = 11.6264(11), c = 14.8543(14) Å for Y2.97(1)Ti0.08(2)Ga1.95(1)
and a = 11.4577(9), c = 14.6999(12) Å for Er3Ti0.08(2)Ga1.92(2). In the former case titanium atoms substitute for both Y and Ga atoms (icosahedral and cubic
coordination, respectively), whereas in the latter case the titanium atoms
exclusively substitute for Ga atoms (cubic coordination).
Unit cell content and coordination polyhedra in the structure of Er3Ti0.08(2)Ga1.92(2).
Keywords
Rare-earth metals / Titanium / Gallium / X-ray
powder diffraction / Solid solution /