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Inverse spin Hall effect (ISHE) in ferromagnetic metals (FM) can also be usedto detect the spin current generated by longitudinal spin Seebeck effect in aferromagnetic insulator YIG. However, anomalous Nernst effect(ANE) in FM itselfalways mixes in the thermal voltage. In this work, the exchange bias structure(NiFe/IrMn)is employed to separate these two effects. The exchange biasstructure provides a shift field to NiFe, which can separate the magnetizationof NiFe from that of YIG in M-H loops. As a result, the ISHE related tomagnetization of YIG and the ANE related to the magnetization of NiFe can beseparated as well. By comparison with Pt, a relative spin Hall angle of NiFe(0.87) is obtained, which results from the partially filled 3d orbits and theferromagnetic order. This work puts forward a practical method to use the ISHEin ferromagnetic metals towards future spintronic applications.

Separation of inverse spin Hall effect and anomalous Nernst effect in ferromagnetic metals