Antiferromagnetic (AFM) spintronics has attracted significant interest due to its potential for lower power consumption, nonvolatile memory, and faster data processing from terahertz-frequency spin dynamics of AFM moments compared to their ferromagnetic (FM) counterpart, driving advancements in information technology. Spin-flop coupling, a perpendicular coupling between AFM and FM moments observed at AFM ${\mathrm{La}}_{0.5}{\mathrm{Sr}}_{0.5}{\mathrm{FeO}}_3$ (LSFO) and FM ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}{\mathrm{MnO}}_3$ (LSMO) interfaces, enables spin transport measurements through the AFM layer, a crucial step in developing AFM spintronics. A moderate magnetic field can reorient the FM moments, and this interfacial coupling, in turn, reorients the AFM moments at the interface. This work investigates LSFO/LSMO bilayers as the thickness of the LSFO layer is systematically varied while keeping the LSMO layer thickness constant. X-ray magnetic linear dichroism measurements, conducted with and without a magnetic field, show the extent of the reorientation of the AFM moments and the evolution of their direction throughout the LSFO thickness. This comprehensive understanding of the behavior of AFM moments in a spin-flop coupled system under the influence of a magnetic field is crucial for advancing the development of AFM spintronics.

Close

PrevNext

View figure in article

• Antiferromagnetism
• Magnetic interactions
• Magnetism
• Interfaces
• Magnetic thin films
• Physical vapor deposition
• X-ray absorption spectroscopy
• X-ray diffraction