BiCoO3 and BiCo1−xFexO3 (x ≤ 0.7) prepared at atmospheric pressure are found to possess a cubic structure probably involving the Bi12O36 network. BiCoO3 is paramagnetic above 100 K, with a negative paramagnetic Curie temperature. BiCo1−xFexO3 (x = 0.5 or 0.7) is ferromagnetic with Tc ≈ 600K.
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