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Spin-orbit torque switching of ultralarge-thickness ferrimagnetic GdFeCo
Physical review B
So far, studies of spin-orbit torques (SOT) in ferromagnets with perpendicular magnetic anisotropy (PMA) have been restricted to ultra thin samples, while a systematic study of its thickness dependence is still lacking in literature. In this article we discuss the thickness dependence of SOT in GdFeCo samples with bulk PMA. We show that the effective SOT fields are decreasing inversely as a function of thickness while the spin-Hall angle stays constant, as expected from angular momentumdoi:10.1103/physrevb.96.064406 fatcat:3dmn2hljgjbanady63f2q74ohe