Solid solutions of Ti in the binary compounds R3Ga2 (R = Y, Er)
Chemistry of Metals and Alloys（2013）
Abstract
The crystal structures of two samples belonging to the substitutional solid solutions of Ti (1.6 at.% at 600ºC) in the binary gallides Y 3 Ga 2 and Er 3 Ga 2 were refined from X-ray powder diffraction data.Both solid solutions belong to the structure type Gd 3 Ga 2 : Pearson symbol tI80, space group I4/mcm, a = 11.6264(11),c = 14.8543(14)Å for Y 2.97(1) Ti 0.08(2) Ga 1.95(1) and a = 11.4577(9),c = 14.6999(12)Å for Er 3 Ti 0.08(2) Ga 1.92(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).Rare-earth metals / Titanium / Gallium / X-ray powder diffraction / Solid solution / Crystal structure
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