Efficient Spintronics with Fully Compensated Ferrimagnets

Implementing Complex Oxides for Efficient Room‐Temperature Spin–Orbit Torque Switching

“…The saturation magnetization M S is determined to be around 160 emu cm −3 , consistent with previous reports. [ 3,4 ]…”

“…As compared to the commonly used ferromagnetic materials such as Co and CoFeB whose PMA strongly relies on interfacial conditions, RE‐TM compounds exhibit robust bulk PMA on various seeding materials. [ 3,4,13,16 ] In addition, RE‐TM ferrimagnets consisting of two antiparallel sublattices possess the advantage of small stray field and ultrafast spin dynamics, which are beneficial for the high‐density and high‐speed spintronic devices. [ 35 ]…”

A comparative study of the domain wall motion in ferrimagnets (Fe,Co)1−x(Gd,Tb)x

“…Among the rich family of compensated FIMs, [15][16][17][18][19][20][21][22][23] rareearth-transition-metal (RE-TM) binary alloys have received tre-mendous attention, in which the spins of their two inequivalent sublattices (RE and TM elements) are antiferromagnetically coupled. For this intriguing material system, many remarkable results, including ultrafast spin dynamics, 5 nanoscale skyrmions, 6 and toggled optical switching, [24][25][26] have been reported.…”

Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets

“…Interest in ferrimagnetic materials has recently grown considerably as ferrimagnets have unique properties with important spintronic applications [1]. The properties of ferrimagnets relevant to spintronics, including the saturation magnetization, spin polarization, and anisotropy, can be tuned across a wide range.…”

“…In addition, at timescales much longer than the initial demagnetization, oscillations in the magneto-optical signal can develop as the rapid heating of the spin system and changes to the sample anisotropy can lead to precessional oscillations of the magnetization [14]. Spin dynamics in the (FeCo) The (FeCo) 1−x Gd x films with a nominal sample structure of Si (substrate) / native SiO 2 layer / (FeCo) 1−x Gd x [100]/ SiO 2 [5] / Pt [1] (numbers in brackets denote thickness in nm) were grown via off-axis DC magnetron sputtering with a stationary substrate. The growth method permitted the development of a film with a near-uniform thickness and with a gradient of the Gd concentration (x) of ≈0.5% per mm along the film.…”