Artificial control of spin order and magnetic properties in LaCrO₃-LaFeO₃ superlattices

Magnetic properties have been artificially controlled in LaFeO₃-LaCrO₃ superlattices by arranging the atomic order of B site ions with changing the stacking direction and periodicity. When Fe and Cr layers are atomically stacked along the (111) direction, ferromagnetism appears, as shown in our previous study. In the case of the superlattices formed along the (100) direction, on the other hand, an antiferromagnetic property appears and the Neel temperatures systematically change from 250 K to >400 K, corresponding to the stacking periodicity. Although the total numbers of Fe and Cr ions are the same in (111) and (100) stacking, quite a different magnetic character can be created in the artificial superlattices.