Soliton-Mediated Magnetic Reversal in an All-Oxide-Based Synthetic Antiferromagnetic Superlattice

All-oxide-based synthetic antiferromagnets (SAFs) are attracting intense research interest due to their superior tunability and great potentials for antiferromagnetic spintronic devices. In this work, using the La2/3Ca1/3MnO3/CaRu1/2Ti1/2O3 (LCMO/CRTO) superlattice as a model SAF, we investigated layer-resolved magnetic reversal mechanism by polarized neutron reflectivity. We found that of LCMO layer moments is mediated nucleation, expansion, shrinkage soliton. This unique process creates reversed configuration SAF after simple field cycling. Therefore, it can enable vertical data transfer from bottom top superlattice. The physical origin intriguing could be attributed cooperation surface spin-flop effect enhanced uniaxial anisotropy layer. work may pave way utilize all-oxide-based SAFs three-dimensional devices with high-density storage.