Unidirectional effect in domain wall propagation observed in bistable glass-coated microwire

Onufer, J.; Ziman, J.; Kladivová, Mária

doi:10.1016/j.jmmm.2015.08.055

Cited by 23 publications

(11 citation statements)

References 23 publications

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“…The existence of a very interesting phenomenon, observed in glass coated Fe 77.5 Si 7.5 B 15 microwire, has been recently reported in [4]. For a given wire region (i.e.…”

Section: Introductionmentioning

confidence: 81%

“…2. The system of coils, their dimensions and their function as well as the procedures for measurement of DW velocity (using the Sixtus-Tonks method) for a given value of the driving magnetic field have been described in [4]. To avoid possible influence of unsteady magnetizing field [6] only signals from pick up coils for which the field already reached steady value were taken for further processing in our experiment (see inset (a) in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…the process of magnetization reversal is different when the sample is magnetized with one orientation of magnetization compared with the opposite one [4]. Interpretation of this phenomenon is not clear.…”

Section: Introductionmentioning

confidence: 95%

“…It has already been shown that domain wall mobility is influenced by applied tensile stress and by circular magnetic field created by dc electric current flowing through the microwire for both v(H) dependences [5].…”

Section: Introductionmentioning

confidence: 97%

“…The letters A, B indicate the direction of DW motion, index 1 means the head-to-head and index 2 the tail-totail type of wall respectively. In the experimental arrangement [4,5] the DW can move only from left to right (from end A to end B) with velocity v AB . If the wire is reversed, the DW moves from end B to end A with velocity v BA .…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Temperature on Unidirectional Effect in Domain Wall Propagation

et al. 2017

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It has been reported recently that domain wall mobility in Fe-based amorphous glass-coated microwire can be significantly different in the cases when magnetization reversal caused by domain wall motion results in different orientation of magnetization. This behaviour has been called unidirectional effect. The effect of temperature on domain wall velocity vs. axial magnetic field dependences was studied for glass-coated Fe77.5Si7.5B15 microwire samples with strong unidirectional effect. Unidirectional effect was observed for the whole temperature interval from 100 K up to room temperature. Analysis of the results obtained indicates that the model of a solid domain wall does not explain the observed v(H) dependences. It seems very probable that besides standard damping mechanisms also changes in structure (shape) of the domain wall as a function of velocity (magnetic field) should be considered. Understanding of this mechanism could also provide interpretation of unidirectional effect.

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“…The existence of a very interesting phenomenon, observed in glass coated Fe 77.5 Si 7.5 B 15 microwire, has been recently reported in [4]. For a given wire region (i.e.…”

Section: Introductionmentioning

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Influence of Temperature on Unidirectional Effect in Domain Wall Propagation

et al. 2017

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Study of the single domain‐wall structure in glass‐coated microwires

Varga

Klein

Jiménez

et al. 2015

Physica Status Solidi (a)

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We present the complex study of the domain‐wall structure in glass‐coated microwires using different methods based on the application of transversal and circular magnetic fields. The results can be understood in terms of two possible structures of domain walls being transversal at low fields and vortex at high fields. Moreover, it is shown that a vortex domain wall does not nucleate at the beginning of propagation, but it is transformed from a transversal domain wall after its depinning.

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

Jiménez

Calle

Fernández-Roldán

et al. 2021

Physica Status Solidi (a)

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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]

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Unidirectional effect in domain wall propagation observed in bistable glass-coated microwire

Cited by 23 publications

References 23 publications

The Influence of Temperature on Unidirectional Effect in Domain Wall Propagation

The Influence of Temperature on Unidirectional Effect in Domain Wall Propagation

Study of the single domain‐wall structure in glass‐coated microwires

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

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