Time-resolved velocity of a domain wall in a magnetic microwire

Calle, E.; Jiménez, Alejandro; Vázquez, M.; Real, R. P. del

doi:10.1016/j.jallcom.2018.07.015

Cited by 14 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that in some experimental configurations, the domain wall can nucleate in the middle of the microwire on defects. To avoid mistakes, in the modified set-up we used a system of three pick-up coils [32][33][34][35]. The microwire of 10 cm length is placed coaxially inside of the primary coil.…”

Section: Methodsmentioning

confidence: 99%

Reversible and Non-Reversible Transformation of Magnetic Structure in Amorphous Microwires

et al. 2020

View full text Add to dashboard Cite

We provide an overview of the tools directed to reversible and irreversible transformations of the magnetic structure of glass-covered microwires. The irreversible tools are the selection of the chemical composition, geometric ratio, and the stress-annealing. For reversible tuning we use the combination of magnetic fields and mechanical stresses. The studies were focused on the giant magnetoimpedance effect and the velocity of the domain walls propagation important for the technological applications. The essential increase of the giant magnetoimpedance effect and the control of the domain wall velocity were achieved as a result of the use of two types of control tools. The performed simulations reflect the real transformation of the helical domain structures experimentally found.

show abstract

Section: Methodsmentioning

confidence: 99%

Reversible and Non-Reversible Transformation of Magnetic Structure in Amorphous Microwires

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Subsequently, we studied the mobile properties of the samples I and II using the Sixtus-Tonks method [101,102]. The first conclusion from the performed experiments is that the velocity of domain wall motion increases with an increasing magnetic field in the two types of studied microwires.…”

Section: Moke Study Of Helical Magnetic Structures In Microwiresmentioning

confidence: 99%

Review of Helical Magnetic Structures in Magnetic Microwires

et al. 2022

View full text Add to dashboard Cite

We provide an overview of the helical magnetic structures in magnetic microwires. Having analyzed the experimental data describing the magnetic behavior of magnetic microwires since the 1990s, we found indirect evidence of the existence of various types of helical magnetic structures. Purposeful research has allowed us to discover the spiral magnetic structure as one of the most unusual helical structures. A comparison of the spiral structure with another type of helical structure—elliptical—was carried out. In the analysis, emphasis was placed on the length of the domain wall as one of the most important parameters. The difference in the dynamic properties of the spiral and elliptical domain walls has been demonstrated.

show abstract

“…In turn, the driving field between P2 and P3, where v DW is estimated, in the center of the microwire and of the solenoid, is homogeneous and higher; hence, the velocity is estimated at comparatively higher fields. Full details as well as the time-resolved motion of the DW have been considered in the study by Calle et al [50] Figure 13. a) Propagation velocity of a single DW against the applied field amplitude, H dr , as determined from the flight time between coils P2 and P3, v DW , and through the emf peaks, emf(v DW .…”

Section: Correlation Between the Me And The Propagating Dwmentioning

confidence: 99%

Matteucci Effect and Single Domain Wall Propagation in Bistable Microwire under Applied Torsion

Jiménez

Calle

Fernández-Roldán

et al. 2021

Physica Status Solidi (a)

View full text Add to dashboard Cite

On the Matteucci Effect and the Bistable Behavior in Microwires under Applied TorsionThe effects of an electrical current flowing through magnetic nanostructures are connected to several underlying novel phenomena that offer new opportunities for electronics technology or "spintronics." [1] For instance, spin-polarized current gives rise to the spin transfer-torque effect, in which the magnetization orientation in a magnetic layer of a tunnel junction or spin valve can be modified. In magnetic storage technologies, the design of writing and reading magnetic bits in high-speed devices profits of the effect induced by small current to inject domain walls (DWs), or to modify their motion characteristics (i.e., race track memories for magnetic storage or in logic devices). [2][3][4] Most of the studies have been conducted in Permalloy lithography nanostripes, where the shape determines the magnetic anisotropy characteristics. There, vortex and transverse DWs are injected or trapped in artificial notches or by local stray fields. [5,6] In cylindrical nanowires, the geometrical symmetry imposes significant differences. The motion of DWs was numerically solved using the Landau-Lifshitz-Gilbert equation, involving all different energy terms, where transverse or vortex DWs are, respectively, obtained for diameters smaller or larger than the exchange length of the corresponding material. [7] More recently, electrochemically grown cylindrical nanowires with diameter in the range 40-400 nm have been investigated experimentally and modeled by micromagnetic simulations. There, the magnetization reversal is typically activated by the propagation of a vortex DW which due to cylindrical geometry is also labeled as Bloch-point DW. [8,9] With the increase in diameter, as is the case of magnetic microwires fabricated by ultrarapid solidification techniques, new observations and opportunities are offered. They are fabricated in a continuous way with up to hundred-meter length and diameter in the range 0.1-90 μm for the so-called glass-coated microwires [10][11][12] and around 120-180 μm for the in-waterquenched ones. [13] Such ultrarapid solidification techniques introduce very strong mechanical stresses that determine most of the magnetic properties which have been reviewed in other studies. [14][15][16]

show abstract

Time-resolved velocity of a domain wall in a magnetic microwire

Cited by 14 publications

References 31 publications

Reversible and Non-Reversible Transformation of Magnetic Structure in Amorphous Microwires

Reversible and Non-Reversible Transformation of Magnetic Structure in Amorphous Microwires

Review of Helical Magnetic Structures in Magnetic Microwires

Matteucci Effect and Single Domain Wall Propagation in Bistable Microwire under Applied Torsion

Contact Info

Product

Resources

About