Perpendicular magnetic anisotropy in TbFeCo/MgO structure with Ta- and Hf-underlayer

Magnetization enhanced the multiple magnetic domain-dominated resonance modes in stripe domain films

“…They demonstrated that Hf is expected to be effective in suppressing grain growth [64] (or the microstructural refinement [65]) and hindering the growth of crystals [66]. The introduction of Hf also reduces the M s and exchange interaction between Fe and Co atoms, and has also been proven to improve perpendicular magnetic anisotropy [67,68]. These results suggest that the introduction of Hf could potentially promote the appearance of SD in FeCo films [36].…”

Channeling skyrmions: Suppressing the skyrmion Hall effect in ferrimagnetic nanostripes

“…Alternatively, like occurs in AFM materials, ferrimagnetic (FI) systems exhibit weak dipole fields and fast spin dynamics, yielding smaller and faster moving Sks, whenever compared to their ferromagnetic analogs. 54,55 Additionally, FI SKs have been experimentally observed in several materials, including thin films [56][57][58][59][60][61][62][63] and stacked multilayers. 24,[64][65][66][67][68] Furthermore, FI skyrmions can also be printed and deleted in a feasible and reproducible way at room temperature by using electric stimuli.…”

Sense current dependent coercivity and magnetization relaxation in Gd-Fe-Co Hall bar

“…)-TM (Fe and Co) alloys have f and d-electrons in the RE and TM sublattices, respectively. In general, a thin film of these materials shows strong perpendicular magnetic anisotropy (PMA) with an anisotropy energy density of about 10 6 erg/cm 3 [16,17]. The two sublattices strongly exchange by a negative exchange interaction, and the net magnetization (MS) of the alloy can be varied from zero to maximum by adjusting the RE/TM content ratio from compensation to RE/TM dominant composition, respectively [18][19][20].…”