Observation of spin-motive force in ferrimagnetic GdFeCo alloy films

  title={Observation of spin-motive force in ferrimagnetic GdFeCo alloy films},
  author={Shunsuke Fukuda and Hiroyuki Awano and Kenji Tanabe},
  journal={arXiv: Materials Science},
We investigated the spin-motive force (SMF) in ferrimagnetic GdFeCo alloy films using the spin-torque-induced ferromagnetic resonance method. The amplitude of the SMF is enhanced by the Gd doping near a Gd composition of the boundary between in-plane and perpendicularly magnetized films, which is roughly consistent with the analysis based on the SMF theory. Moreover, we find that the sign of the SMF is independent of the spin polarization and that the s-f coupling at Gd atoms does not play as a… 
5 Citations

Figures from this paper

Giant modulation of magnetic compensation temperature in ferrimagnetic GdFeCo alloys by oblique sputtering
Abstract An experimental investigation of oblique sputtering angle on the magnetic compensation temperature (TM) in ferrimagnetic GdFeCo alloys is reported. These alloys exhibit a decrease ~ 200 K in
Features of the sperimagnetic structure of TbCo-based multilayers
The influence of the thickness of the nanoscale ferrimagnetic Tb-Co layers on the magnetic properties of Tb-Co/Ti multilayers was studied. The fanning cone angle of Tb-Co sperimagnetic structure
Thermal degradation behavior of amorphous GdFeCo alloy films with perpendicular anisotropy
Abstract Amorphous perpendicularly magnetized GdFeCo films are fabricated by sputtering a composite target. Perpendicular magnetic anisotropy with a typical order of 105 erg/cm3 in magnitude is


Temperature dependence of magnetic resonance in ferrimagnetic GdFeCo alloys
We provide a macroscopic theory and experimental results for magnetic resonances of antiferromagnetically-coupled ferrimagnets. Our theory, which interpolates the dynamics of antiferromagnets and
Time-domain observation of the spinmotive force in permalloy nanowires.
Numerical simulations explain quantitatively these features of spinmotive force and indicate that it scales with the field even in a field range where the wall motion is no longer associated with periodic angular rotation of the wall magnetization.
Stability of spinmotive force in perpendicularly magnetized nanowires under high magnetic fields
Spinmotive force induced by domain wall motion in perpendicularly magnetized nanowires is numerically demonstrated. We show that using nanowires with large magnetic anisotropy can lead to a high
Spin motive force induced in Fe 3 O 4 thin films with negative spin polarization
Spin motive force (SMF) is induced by a time and spatial derivative of magnetizations and is dependent on spin polarization. We compare the SMF in FeNi with positive spin polarization with that in a
Low Magnetic Damping of Ferrimagnetic GdFeCo Alloys.
The Gilbert damping parameter α was as low as the order of 10^{-3} and was almost constant across the angular momentum compensation temperature T_{A}, starkly contrasting previous predictions that α should diverge at T_A due to a vanishing total angular momentum.
Ultrafast spin dynamics across compensation points in ferrimagnetic GdFeCo: The role of angular momentum compensation
Using an all-optical pump and probe technique, we have investigated the temperature dependence of the ultrafast magnetic response in a ferrimagnetic amorphous $\mathrm{GdFeCo}$ thin film. When the
Anomalous Ettingshausen effect in ferrimagnetic Co–Gd
We report the observation of anomalous Ettingshausen effect (AEE) in ferrimagnetic Co100−x Gd x amorphous alloy thin films, which was visualized using lock-in thermography. We found that the sign of
Prediction of giant spin motive force due to Rashba spin-orbit coupling.
It is predicted that in Rashba spin-orbit coupling systems with a large Rashba parameter α(R), the coupling generates the spin-dependent electric field [±(α(R)m(e)/eħ)(z[over ^]×∂m/∂t)], which can be large enough to modify the magnetization dynamics significantly.
Temperature dependence of current-induced magnetization switching in spin valves with a ferrimagnetic CoGd free layer.
The temperature dependence of current-induced magnetization switching of ferrimagnetic CoGd free layers in spin valves is explored and the effect to the different compensation temperatures of the net magnetization and angular momentum is attributed.
Cascaded spin motive force driven by the dynamics of the skyrmion lattice
We numerically investigate the spin motive force (SMF) driven by the dynamics of a Skyrmion lattice. The rotating mode of the Skyrmion core excited by the AC magnetic field induces the large