Citation: Ferreira, Timothy; Morrison, Gregory; Chance, W. Michael; Calder, Stuart; Smith, Mark D.; zur Loye, Hans-Conrad (2017). BaFe4O7 and K0.22Ba0.89Fe4O7: Canted Antiferromagnetic Diferrites with Exceptionally High Magnetic Ordering Temperatures. Chemistry of Materials, 29, pp. 2689-.