Study on the structural and magnetic properties of e-beam evaporated Co thin films annealed in vacuum

Novaković, M.; Popović, Maja; Rajić, Vladimir

doi:10.1016/j.jallcom.2022.168411

Cited by 5 publications

(4 citation statements)

References 50 publications

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“…% . The latter is similar to the Co content reported for other techniques such as electron-beam evaporated Co but lower than what can be obtained using, for instance, MOCVD, where contents of essentially 100 at. % can be obtained.…”

Section: Introductionsupporting

confidence: 82%

Scanning Nitrogen-Vacancy Magnetometry of Focused-Electron-Beam-Deposited Cobalt Nanomagnets

Žaper,

Rickhaus,

Wyss

et al. 2024

ACS Appl. Nano Mater.

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Focused-electron-beam-induced deposition is a promising technique for patterning nanomagnets in a single step. We fabricate cobalt nanomagnets in such a process and characterize their content, saturation magnetization, and stray magnetic field profiles by using a combination of transmission electron microscopy and scanning nitrogen-vacancy (NV) magnetometry. We find agreement between the measured stray field profiles and saturation magnetization with micromagnetic simulations. We further characterize magnetic domains and grainy stray magnetic fields in the nanomagnets and their halo sidedeposits. This work may aid in the evaluation of Co nanomagnets produced through focused electron-beam-induced deposition for applications in spin qubits, magnetic field sensing, and magnetic logic.

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Section: Introductionsupporting

confidence: 82%

Scanning Nitrogen-Vacancy Magnetometry of Focused-Electron-Beam-Deposited Cobalt Nanomagnets

Žaper,

Rickhaus,

Wyss

et al. 2024

ACS Appl. Nano Mater.

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“…[174] However, E-beam deposition can damage the substrate and requires high vacuum conditions during the process (Table 2). [154][155][156][157] Kadumudi et al [175] prepared recyclable wood-based electronics based on nanocellulose with a nanosilicate (NS) reinforcement for application in a circuit and joule heater (Figure 4D). A mixture of nanocellulose and NS formed the core-shell plates with a thin nanopaper by hot pressing or solvent casting.…”

Section: Electron-beam (E-beam) Depositionmentioning

confidence: 99%

Cutting Edge Use of Conductive Patterns in Nanocellulose‐Based Green Electronics

Kwon

Choi

et al. 2023

Adv Funct Materials

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Green electronics made from degradable materials have recently attracted special attention, because electronic waste (e‐waste) represents a serious threat to the environment and to human health worldwide. Among the novel materials used for sustainable technologies, nanocelluloses containing at least 1D in the nanoscale range (1–100 nm) have been widely exploited for various industrial applications owing to their inherent properties, such as biodegradability, mechanical strength, thermal stability, and optical transparency. This review highlights recent advances in research on the development of patterns for conductive material on nanocellulose substrates for use in high‐performance green electronics. The advantages of nanocellulose substrates compared to conventional paper substrates for advanced green electronics are discussed. Importantly, this review emphasizes various fabrication strategies for producing conductive patterns on different types of nanocellulose‐based substrates, such as cellulose nanofiber (CNF), (2,2,6,6‐tetramethylpiperidin‐1‐yl)oxyl(TEMPO)‐oxidized CNF, regenerated cellulose, and bacterial cellulose. In the latter part of this review, emerging engineering applications for green electronics such as circuits, transistors/antennas, sensors, energy storage systems, and electrochromic devices are further discussed.

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“…The XRD patterns of the as-deposited and annealed Co 40 Fe 40 Sm 20 thin films are illustrated in Figure 1. Distinct peaks in the X-ray diffraction (XRD) patterns are evident at specific diffraction angles (2θ) of 47.7 • , 54.6 • , and 56.4 • , corresponding to the crystallographic planes of Co (0002), Co 2 O 3 (422), and Co 2 O 3 (511) [16,17]. Guojian Li et al fabricated Co films on Si(100) substrate and observed the layer of Co films, SiO 2 , and Si by transmission electron microscopy (TEM), with SiO 2 being the nature oxide for the Si substrate surface [18].…”

Section: Structure Property and Grain Size Distributionmentioning

confidence: 99%

Studying the Crucial Physical Characteristics Related to Surface Roughness and Magnetic Domain Structure in CoFeSm Thin Films

Fern,

Liu,

Chang

et al. 2023

Coatings

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This study investigated the effects of varying film thicknesses and annealing temperatures on the surface roughness and magnetic domain structure of CoFeSm thin films. The results revealed that as the film thickness increased, both the crystalline size and surface roughness decreased, leading to a reduction in coercivity (Hc) and improved magnetic contrast performance. Energy-dispersive X-ray spectroscopy (EDS) analysis confirmed the presence of cobalt (Co), iron (Fe), and samarium (Sm) within the thin films. Notably, the 40 nm Co40Fe40Sm20 thin film annealed at 200 °C exhibited lower sheet resistance (Rs) and resistivity (ρ), indicating higher conductivity and a relatively higher maximum magnetic susceptibility (χac) at 50 Hz. These findings suggest that these films are well suited for low-frequency magnetic components due to their increased spin sensitivity. The 40 nm Co40Fe40Sm20 thin film, subjected to annealing at 200 °C, displayed a distinct stripe domain structure characterized by prominently contrasting dark and bright patterns. It exhibited the lowest Hc and the highest saturation magnetization (Ms), leading to a significant improvement in their soft magnetic properties. It is proposed that the surface roughness of the CoFeSm thin films plays a crucial role in shaping the magnetic properties of these thin magnetic films.

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Study on the structural and magnetic properties of e-beam evaporated Co thin films annealed in vacuum

Cited by 5 publications

References 50 publications

Scanning Nitrogen-Vacancy Magnetometry of Focused-Electron-Beam-Deposited Cobalt Nanomagnets

Scanning Nitrogen-Vacancy Magnetometry of Focused-Electron-Beam-Deposited Cobalt Nanomagnets

Cutting Edge Use of Conductive Patterns in Nanocellulose‐Based Green Electronics

Studying the Crucial Physical Characteristics Related to Surface Roughness and Magnetic Domain Structure in CoFeSm Thin Films

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