Ba2GdRu1-uCuuO6 is studied by magnetic susceptibility and resonance. Gd, Ru
, and Cu all order antiferromagnetically at low temperatures: Gd orders at
approximate to 12 K, Ru at approximate to 48 K, and Cu at approximate to 86
K. A Gd antiferromagnetic resonance is observed below approximate to 12 K.
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