Abstract
Five samples of solid solutions GdRuxCd1−x extending up to x ≈ 0.25 were synthesized by induction-melting of the elements in sealed tantalum tubes. According to X-ray powder diffraction data, the GdRuxCd1−x samples crystallize with the cubic CsCl structure. The structures of two crystals were refined from diffractometer data: Pm3̄m, a = 372.41(4) pm, wR2 = 0.0363, 45 F2, 5 variables for GdRu0.10(1)Cd0.90(1) and a = 367.70(4) pm, wR2 = 0.0301, 39 F2, 5 variables for GdRu0.20(1)Cd0.80(1). The cadmium-ruthenium substitution has a drastic effect on the magnetic properties. All samples order ferromagnetically, however, the Curie temperature decreases drastically from 258 K for GdCd to 63.6 K for GdRu0.20Cd0.80 with a Vegard-type behavior.
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