Thickness effects on magnetic properties and ferromagnetic resonance in Co–Ni–Fe–N soft magnetic thin films

Kim, Y. M.; Han, Sung Hee; Kim, H. J.; Choi, Duck Hwan; Kim, K. H.; Kim, J.

doi:10.1063/1.1453950

Cited by 14 publications

(5 citation statements)

References 5 publications

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“…The results were obtained as a result of the thickness effect and Y addition, which increased the spin exchange coupling [ 39 , 40 ]. The thickness effect states that as the thickness increases, the maximum χ ac values also increase [ 41 ]. When the thickness was 50 nm, the maximum χ ac value was 0.11 at the as-deposited state, 0.13 when the annealed temperature was 100 °C, 0.15 when the heat treatment temperature was 200 °C, and the maximum χ ac value was 0.20 when the heat treatment temperature was 300 °C.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

Liu

Chang

Chiang³

et al. 2023

Materials

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Cobalt Iron Yttrium (CoFeY) magnetic film was made using the sputtering technique in order to investigate the connection between the thickness and annealing procedures. The sample was amorphous as a result of an insufficient thermal driving force according to X-ray diffraction (XRD) examination. The maximum low-frequency alternate-current magnetic susceptibility (χac) values were raised in correlation with the increased thickness and annealing temperatures because the thickness effect and Y addition improved the spin exchange coupling. The best value for a 50 nm film at annealing 300 °C for χac was 0.20. Because electron carriers are less constrained in their conduction at thick film thickness and higher annealing temperatures, the electric resistivity and sheet resistance are lower. At a thickness of 40 nm, the film’s maximum surface energy during annealing at 300 °C was 28.7 mJ/mm2. This study demonstrated the passage of photon signals through the film due to the thickness effect, which reduced transmittance. The best condition was found to be 50 nm with annealing at 300 °C in this investigation due to high χac, strong adhesion, and low resistivity, which can be used in magnetic fields.

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Section: Resultsmentioning

confidence: 99%

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

Liu

Chang

Chiang³

et al. 2023

Materials

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“…In this work, Object-Oriented Micromagnetic Framework (OOMMF) simulations were performed on the filter structure shown in Figure 1a. OOMMF solves Landau-Lifshitz-Gilbert (LLG) equation using finite-difference methods [20][21][22][23].…”

Section: Methodsmentioning

confidence: 99%

Engineered Magnetization Dynamics of Magnonic Nanograting Filters

2021

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Magnonic crystals and gratings could enable tunable spin-wave filters, logic, and frequency multiplier devices. Using micromagnetic models, we investigate the effect of nanowire damping, excitation frequency and geometry on the spin wave modes, spatial and temporal transmission profiles for a finite patterned nanograting under external direct current (DC) and radio frequency (RF) magnetic fields. Studying the effect of Gilbert damping constant on the temporal and spectral responses shows that low-damping leads to longer mode propagation lengths due to low-loss and high-frequency excitations are also transmitted with high intensity. When the nanowire is excited with stronger external RF fields, higher frequency spin wave modes are transmitted with higher intensities. Changing the nanowire grating width, pitch and its number of periods helps shift the transmitted frequencies over super high-frequency (SHF) range, spans S, C, X, Ku, and K bands (3–30 GHz). Our design could enable spin-wave frequency multipliers, selective filtering, excitation, and suppression in magnetic nanowires.

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“…Properties of micron thick films grown by magnetron sputtering deposition are therefore rarely reported. Sputtered films thicker than 500 nm are even rarer although a thickness transition from amorphous to polycrystalline phase [17] and strong thickness dependence of coercivity [18] have been reported and unexplained.…”

Section: Introductionmentioning

confidence: 98%

Influence of the Cr and Ni concentration in CoCr and CoNi alloys on the structural and magnetic properties

Aubry

Liu

Billard

et al. 2017

Journal of Magnetism and Magnetic Materials

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a b s t r a c tThe crystalline and magnetic properties of micron thick magnetron sputtered Co 1 À x Cr x and Co 1 À x Ni x alloy films are analyzed in the view of their implementation as semi-hard magnets. All of the tested films crystallize in an hcp lattice, at least up to 35 at% of alloying elements (Cr or Ni). The structural study shows that the ratio of hcp phase with [0001] axis orientated perpendicular to the film as compared with in-plane orientation increases (resp. decreases), when Ni (resp. Cr) concentration increases independently of the post-annealing temperature. The orientation of the magnetization results from the competition between the demagnetization field which tends to align the magnetization in plane and the crystalline anisotropy which tends to maintain the magnetization along the [0001] axis. Interestingly, we find that, although Co and Ni are very similar atoms, Co 1 À x Ni x alloys crystalline anisotropy can be strongly increased and reach up to twice the anisotropy of the best Co 1 À x Cr x alloy, while maintaining a magnetization at saturation above 1200 kA/m. The thermal stability of the structural and magnetic properties of both alloys is demonstrated for an annealing temperature up to 300°C.

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Thickness effects on magnetic properties and ferromagnetic resonance in Co–Ni–Fe–N soft magnetic thin films

Cited by 14 publications

References 5 publications

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

Engineered Magnetization Dynamics of Magnonic Nanograting Filters

Influence of the Cr and Ni concentration in CoCr and CoNi alloys on the structural and magnetic properties

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