Abstract
Antiferromagnets attract keen interest for use in spin valves, magnetic tunnel junctions, and high-density data storage. There are difficulties, though: Bulk antiferromagnets need very large external fields to induce a spin-flop transition, and synthetic antiferromagnets made of multilayers of magnetic metals or alloys are tough to integrate with functional oxides. By constructing a superlattice of two oxides, this study realizes an all-perovskite synthetic antiferromagnet with high Curie temperature, interlayer exchange coupling, and layer-resolved magnetic switching at modest magnetic fields. These results could carry wide implications for next-generation magnetic devices.
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