Crystal growth of pure phases of GdxY1-xH2 (0 <= x <= 1) was successfully carried out by depositing GdxY1-x films and their hydrogenation, the growth results of which were investigated by X-ray diffraction measurements as well as temperature (T) dependence of magnetic susceptibility (chi). The fcc lattice constant in GdxY1-xH2 is found to be linearly increased with increasing x. Behavior characteristic to the para-to-antiferromagnetic transition are clearly observed in the chi-T curve for x = 0.39, 0.47, 0.76, and 1.0 cases. The Neel temperature (T-N) is found to be linearly decreased with decreasing x from x = 1.0 (GdH2), and is predicted to show T-N = 0 K at x similar to 0.1 by extrapolating T-N from large x region, implying the antiferromagnetic order disappears at x similar to 0.1. The quasi-zero Hall effect was observed for x = 0, 0.19, 0.37, 0.39, and 0.47 cases, whereas a moderate Hall effect is observed for x = 0.76 and 1.0 cases. The type of Hall effect is also discussed. (c) 2013 Elsevier B.V. All rights reserved.