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.