| Abstract: | The exchange coupling at the interfaces of magnetic superlattices consistingof ferromagnetic SrRuO3 and antiferromagnetic SrMnO3 grown on (001)oriented SrTiO3 is studied with in-plane and out-of-plane orientations of the cooling magnetic field,with respect to the substrate plane. Themagnetization of the in-plane, field cooled hysteresis loop is lower thanthe corresponding in-plane zero-field-cooled hysteresis loop. Theout-of-plane field cooled hysteresis loop is shifted, from the origin, alongthe graphical magnetization axis. We attribute this irreversible rotation ofthe moment to the pinning/biasing of spin in the SrRuO3 layer in thevicinity of interfaces by the antiferromagnetic SrMnO3 layer. |
