LAUSR

An unambiguous antiferromagnetic interlayer exchange coupling (IEC) is realized in all-perovskite oxide La0.7Sr0.3MnO3(LSMO)/SrRu1-xTixO3(SR1-xTxO) (x < 0.3) superlattices above the Curie temperature of the SR1-xTxO spacer layer, which is different from the traditional interfacial antiferromagnetic coupling. For 0.3 ≤ x ≤ 0.5, the superlattices behave as a ferromagnetic coupling. Meanwhile, this antiferromagnetic IEC between the ferromagnetic LSMO layers across the SR1-xTxO spacer can be further modulated by changing the thickness of SR1-xTxO spacer. Combining the high Curie temperature of LSMO, these findings may have potential applications in future spintronic devices.