Bloch Wall Anomaly at the Canted-Ferromagnetic Order-Order Transition of Mixed Double-Exchange/Superexchange Magnetic Systems

Abstract

Subject classification: 75.30.Et; 75.30.Kz; 76.60.Jx; S1.62 In mixed coupled, but still magnetically polarized compounds, order-order transitions occur at which occasion the Bloch wall thickness d can go to zero. This is demonstrated for a deGennes mixed double-exchange/superexchange situation. Experimentally, such Bloch wall anomalies can be detected via Bloch wall enhanced NMR. We discuss one example, i.e. the intermetallic compound MnAs.