Copper dusting effects on perpendicular magnetic anisotropy in Pt/Co/Pt tri-layers

Parakkat, Vineeth Mohanan; Ganesh, K. R.; Kumar, P. S. Anil

doi:10.1063/1.4944514

Cited by 6 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 7 a shows and the corresponding vs , for various . Here, 3 < < 7.5 10 5 J/m 3 , which are in general agreement with studies of comparable Co and Pt thicknesses, using different refractory metal seed layers (such as Ru and Ta) 61 , 67 , 68 . No clear dependence of on and is found, which can most likely be attributed to the limited range of and values explored.…”

Section: Resultssupporting

confidence: 88%

Electron beam evaporation of superconductor-ferromagnet heterostructures

Bromley

Wright

Jones

et al. 2022

Sci Rep

View full text Add to dashboard Cite

We report on the electronic and magnetic properties of superconductor-ferromagnet heterostructures fabricated by electron beam evaporation on to unheated thermally oxidised Si substrates. Polycrystalline Nb thin films (5 to 50 nm thick) were shown to possess reliably high superconducting critical temperatures ($$T_{c}$$ T c ), which correlate well with the residual resistivity ratio (RRR) of the film. These properties improved during ex-situ annealing, resulting in $${\Delta }T_{c}$$ Δ T c and $${\Delta }$$ Δ RRR increases of up 2.2 K ($$\sim$$ ∼ 40% of the pre-annealed $$T_{c}$$ T c ) and 0.8 ($$\sim$$ ∼ 60% of the pre-annealed RRR) respectively. Nb/Pt/Co/Pt heterostructures showed substantial perpendicular anisotropy in the ultrathin limit (≤ 2.5 nm), even in the extreme limit of Pt(0.8 nm)/Co(1 nm)/Pt(0.6 nm). These results point to the use of electron beam evaporation as route to line-of-sight deposited, low-thickness, high quality Nb-based superspintronic multilayers.

show abstract

Section: Resultssupporting

confidence: 88%

Electron beam evaporation of superconductor-ferromagnet heterostructures

Bromley

Wright

Jones

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Using a toy model bearing semblance to that used by Bruno to explain RKKY-like interlayer exchange coupling in GMR stacks, [47] has shown that if this layer is also conducting, then it can suppress iDMI due to its screening effect. Similar reports of suppressed iDMI and K eff upon addition of metallic spacer layers have been reported [44,47,49,50]. Furthermore, the intermixing effect, understood within the real space spin-spiral based DMI model [37], can microscopically alter the hybridization of 3d-5d bands around the Fermi level in a complicated way.…”

Section: Resultssupporting

confidence: 73%

Tuning the interfacial Dzyaloshinskii–Moriya interaction in perpendicularly magnetized CoFeB system

Kumar

Guddeti²,

Kumar³

2022

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Magnetic field driven domain-wall motion in the creep regime is investigated with Kerr microscopy in out-of-plane magnetized as deposited and annealed Ta/Pt/CoFeB/Pt multilayers. In addition to the effect of thermal annealing on the quasi-static magnetic properties of Ta (3 nm)/Pt (3 nm)/CoFeB (tCoFeB nm)/Pt (2 nm) film stacks where tCoFeB = {0.72, 0.93}, the study focuses on the modified interfacial Dzyaloshinskii-Moriya interaction (iDMI) that governs the dynamics of chiral domain walls. The strength of the iDMI decreases with an increase in both tCoFeB at a fixed annealing temperature and annealing temperature for a fixed tCoFeB. While the former behaviour arises due to the interfacial nature of iDMI, the latter correlates with the annealing induced suppression of magnetization and enhancement of interface roughness that could be respectively ascribed to B-segregation and Co-Fe-Pt intermixing.

show abstract

“…The iDMI value is one of the highest in Pt/Co systems, which are also characterized by strong perpendicular magnetic anisotropy (PMA). Thus, many of the iDMI systems are basing on Pt/Co ultrathin films with broken inversion symmetry, e.g., Pt/Co/AlO x [8,9], Pt/Co/MgO [10] Pt/Co/Ta [11], Pt/Co/(W,Ta,Pd) [12], Pt/Co-Ni/Ta [13], Ir/Fe/Co/Pt [14], Pt/Co/Cu/AlO x [15], Pt/Co/Os/Pt [16], Pt/Cu/Co/Pt [17]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal spin-wave dynamics in Pt/Co/W/Co/Pt multilayers

et al. 2021

View full text Add to dashboard Cite

We present a detailed study of the spin-wave dynamics in single Pt/Co/W and double Pt/Co/W/Co/Pt ferromagnetic layer systems. The dispersion of spin waves was measured by wavevector-resolved Brillouin light scattering spectroscopy while the in-plane and out-of-plane magnetization curves were measured by alternating gradient field magnetometry. The interfacial Dzyaloshinskii-Moriya interaction induced nonreciprocal dispersion relation was demonstrated for both single and double ferromagnetic layers and explicated by numerical simulations and theoretical formulas. The results indicate the crucial role of the order of layers deposition on the magnetic parameters. A significant difference between the perpendicular magnetic anisotropy constant in double ferromagnetic layer systems conduces to the decline of the interlayer interactions and different dispersion relations for the spin-wave modes. Our study provides a significant contribution to the realization of the multifunctional nonreciprocal magnonic devices based on ultrathin ferromagnetic/heavy-metal layer systems.

show abstract

Copper dusting effects on perpendicular magnetic anisotropy in Pt/Co/Pt tri-layers

Cited by 6 publications

References 16 publications

Electron beam evaporation of superconductor-ferromagnet heterostructures

Electron beam evaporation of superconductor-ferromagnet heterostructures

Tuning the interfacial Dzyaloshinskii–Moriya interaction in perpendicularly magnetized CoFeB system

Nonreciprocal spin-wave dynamics in Pt/Co/W/Co/Pt multilayers

Contact Info

Product

Resources

About