Strain-induced ferromagnetism in FeAl single crystals

Cold work can induce a paramagnetic to ferromagnetic transition in FeAl. The ferromagnetic behavior can be explained in terms of wrong bonding in deformation-induced antiphase boundary tubes. The implications of this mechanism are discussed. The magnetic behavior of single crystal plates of Fe–40Al and Fe–50Al were measured in different orientations both before and after deformation, and after quenching. Fe–40Al single crystal shows a much larger saturation magnetization at room temperature than Fe–50Al single crystal, with increased susceptibility. The results are discussed in terms of the local environment model.