X-ray photoelectron spectroscopy and magnetic susceptibility of GdNi_{5}, GdNi_{4}Al, GdNi_{2}Al_{3} and GdNiAl_{4} are reported. The magnetic state of Ni 3d-electrons strongly depends on the crystallographic structure of the compounds, showing spin fluctuations in GdNi_{5} and GdNi_{4}Al, a similar behavior with that of metallic Ni in GdNi_{2}Al_{3} and a filled 3d-band in GdNiAl_{4}.
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