Ferromagnetic resonance study of sputtered Pt/Co/Pt multilayers

Neilinger, P.; Ščepka, T.; Mruczkiewicz, M.; Dérer, J.; Manca, D.; Dobročka, Edmund; Samardak, Alexander S.; Grajcar, M.; Cambel, V.

doi:10.1016/j.apsusc.2018.06.172

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…Currently, experiments on Pt/Co multilayer thin films suggests that the Gilbert's damping coefficient on such system is lower [71][72][73][74]. Therefore, recent studies on skyrmion logic gates are usually conducted with 𝛼 = 0.1 [44,75].…”

Section: B Logic Gates With Realistic Current Valuesmentioning

confidence: 99%

Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions

et al. 2021

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Technologies based on magnetic skyrmions such as novel computational devices that can operate at high speed or low energy consumption have been proposed by many researchers.Recently, synthetic antiferromagnetic (SyAF) structures have been proposed to increase the stability and mobility of skyrmions by reducing or eliminating the skyrmion Hall effect. Here, we numerically study the current-induced dynamics of skyrmions on SyAF bilayer structures.We demonstrate the effective control and manipulation of SyAF skyrmions, including the directional displacement and alignment. Besides, we design SyAF skyrmion-based logic gates such as the AND, OR, XOR and NOT gates. Our design provides guidance for future development of spintronic computing devices that use topological nanoscale spin textures as information carriers.

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Section: B Logic Gates With Realistic Current Valuesmentioning

confidence: 99%

Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions

et al. 2021

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“…Ferromagnetic films have a large magnetization rate, which means that they can be magnetized to saturation under a small external magnetic field (10-100 Oe), and maintain their magnetization after the removal of the external magnetic field. Above room temperature, pure metallic elements such as Fe, Co, Ni, and Gd are ferromagnetic, among which Co has the highest Curie temperature up to 1130 • C. Ferromagnetic Co films are widely used in high-frequency magnetic recording [14] and perpendicular magnetic recording [15,16] due to their high saturation magnetization strength, high-temperature ferromagnetism, and magnetic crystal anisotropy characteristics. In order to further improve the magnetic recording density, it is important to further regulate the microstructure and magnetic property of Co magnetic thin films.…”

Section: Introductionmentioning

confidence: 99%

“…Magnetic thin film preparation techniques are crucial for the microstructure and magnetic properties of thin films. At present, the main techniques Materials 2023, 16, 3395 2 of 11 for the preparation of magnetic thin films include molecular beam epitaxy [17,18], magnetron sputtering coating [19][20][21], and vacuum evaporation coating [22,23]. Among them, molecular beam epitaxy and magnetron sputtering require ultra-high vacuum, precise air pressure control, and temperature control system.…”

Section: Introductionmentioning

confidence: 99%

Structure and Performance Optimization of Co Magnetic Thin Films Deposited by Vacuum Evaporation Coating

Mao

Tang

et al. 2023

Materials

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Co magnetic films are widely used in high-frequency magnetic recording and vertical magnetic recording due to their high saturation magnetization and magnetocrystalline anisotropy. In this work, ferromagnetic Co magnetic films were prepared on copper substrate by vacuum evaporation combined with heat treatment (H2 atmosphere), to investigate the impact of film thickness and annealing temperature on microstructure and magnetic properties. The results show that with the increase in annealing temperature, the Co thin film physical phase does not change significantly, the crystallinity increases, and the grain size increases, which is consistent with the results obtained from the SEM morphology map of the sample surface, leading to an increase in coercivity. By annealing experiments (atmospheric atmosphere) on Co magnetic films with and without an Al protective layer, as shown by scanning electron microscopy microscopic characterization results, it was verified that the Al layer can protect the inner Co layer from oxidation. As the film thickness increases from 10 to 300 nm, the magnetic properties of Co films change significantly. The saturation magnetization gradually increases from 0.89 to 5.21 emu/g, and the coercivity increases from 124.3 to 363.8 Oe. The remanence ratio of the 10 nm magnetic film is 0.82, which is much higher than the film remanence ratio of 0.46 at 50 nm. This is because when the thickness of the film is between 10 and 50 nm, the magnetic moments partially deviate from the in-plane direction, and the out-of-plane component reduces the film remanence ratio. This study shows that optimizing annealing temperature and film thickness can effectively control the structure and magnetic properties of Co magnetic films, which is of great significance for the development of the magnetic recording field.

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The effect of Al2O3 insertions on the thermal stability and microstructure of Co/Pt multilayers

Liu

Chen

et al. 2023

Journal of Materials Research and Technology

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Ferromagnetic resonance study of sputtered Pt/Co/Pt multilayers

Cited by 6 publications

References 28 publications

Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions

Logic Gates Based on Synthetic Antiferromagnetic Bilayer Skyrmions

Structure and Performance Optimization of Co Magnetic Thin Films Deposited by Vacuum Evaporation Coating

The effect of Al2O3 insertions on the thermal stability and microstructure of Co/Pt multilayers

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