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