Observation of spin-motive force in ferrimagnetic GdFeCo alloy films
arXiv:2001.01042 · doi:10.1063/5.0002802
Abstract
Non-uniform magnetic structures produce emergent electromagnetic phenomena such as the topological Hall effect and the spin-motive force (SMF). The experimental reports on the SMF, however, are very few and the relationship between the SMF and material parameters is still unclear. In this study, we investigated the SMF in ferrimagnetic GdFeCo alloy films using the spin-torque-induced ferromagnetic resonance method and clarified the relationship. The amplitude of the detected SMF becomes larger than that of the transition metal alloy FeCo by the Gd doping and reaches the maximum near a Gd composition of the boundary between in-plane and perpendicularly magnetized films. According to the analytical calculation, the enhancement is related to the trajectory of the magnetization precession. Moreover, we find that the SMF induced by the magnetic resonance is inversely proportional to the square of the damping constant.
References in corpus (19)
- Skyrmion Lattice in a Chiral Magnet
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Topological Hall effect in the A-phase of MnSi
- Real-space observation of current-driven domain wall motion in submicron magnetic wires
- Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
- Electrical switching of vortex core in a magnetic disk
- Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets
- Unusual Hall Effect Anomaly in MnSi Under Pressure
- Ultra-low magnetic damping of a metallic ferromagnet
- Prediction of Giant Spin Motive Force due to Rashba Spin-Orbit Coupling
- Low magnetic damping of ferrimagnetic GdFeCo alloys
- Continuous Generation of Spinmotive Force in a Patterned Ferromagnetic Film
- Temperature dependence of magnetic resonance in ferrimagnetic GdFeCo alloys
- Angular momentum compensation manipulation to room temperature of the ferrimagnet HoDyFeO detected by the Barnett effect
- Observation of gyromagnetic reversal
- Spinmotive force due to motion of magnetic bubble arrays driven by magnetic field gradient
- Electrical detection of magnetic states in crossed nanowires using the topological Hall effect
- Stability of Spinmotive Force in Perpendicularly Magnetized Nanowires under High Magnetic Fields