Abstract
AbstractThe intermetallic compounds GdAuMg and YAuMg form a continuous solid solution Gd1–xYxAuMg. Samples in x=0.1 steps were synthesized from the elements in sealed tantalum ampoules in an induction furnace. Phase purity of the samples was checked by powder X‐ray diffraction. The structures of two members of the solid solution were refined from single crystal X‐ray diffractometer data: ZrNiAl type, P 2m, a=756.16(6), c=413.06(4) pm, wR2=0.0402, 328 F2 values, 16 variables for Gd0.80(2)Y0.20(2)AuMg and a=754.82(7), c=411.24(4) pm, wR2=0.0292, 325 F2 values, 16 variables for Gd0.37(1)Y0.63(1)AuMg. Temperature dependent magnetic susceptibility studies show a continuous decrease of the Néel temperature from TN=81.1(1) K (GdAuMg) to 3.5(1) K (Gd0.1Y0.9AuMg). With increasing x in Gd1–xYxAuMg the saturation magnetization increases, with a maximal value of 6.44(1) μB Gd atom−1 for Gd0.1Y0.9AuMg at 3 K. The dilution of the gadolinium substructure with yttrium pushes the magnetization isotherms close to Brillouin type behavior (free Gd3+).
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