Peculiarity of Solitary Deflection Waves Dynamics on the Domain Walls of Yttrium Orthoferrite

2015 ◽  
Vol 233-234 ◽  
pp. 435-438
Author(s):  
Mikhail V. Chetkin ◽  
Yuliya N. Kurbatova ◽  
Tatiana B. Shapaeva
Keyword(s):  
Nonlinear Dynamics ◽  
Domain Wall ◽  
Spin Wave ◽  
High Speed ◽  
Domain Walls ◽  
High Speed Photography ◽  
Gyroscopic Force ◽  
Yttrium Orthoferrite ◽  
Moving Domain ◽  
Limiting Velocity

The solitary deflection waves accompany moving antiferromagnetic vortices in the domain wall of yttrium orthoferrite. These waves allow to investigate generation and nonlinear dynamics of these vortices on the moving domain wall with the help of two-and three-fold digital high speed photography. As the domain walls and the antiferromagnetic vortices dynamics is quasi-relativistic with the limiting velocity c=20 km/s, which is equal to the spin-wave velocity. The dynamics of solitary deflection waves can be explained assuming existence of the gyroscopic force. This work is devoted to experimental results on the dynamics of the solitary deflection waves on the domain wall of yttrium orthoferrite.

scholarly journals Measurement of the tilt of a moving domain wall shows precession-free dynamics in compensated ferrimagnets

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
E. Haltz ◽  
J. Sampaio ◽  
S. Krishnia ◽  
L. Berges ◽  
R. Weil ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Domain Wall ◽  
Low Power ◽  
High Speed ◽  
Domain Walls ◽  
Spin Orbit ◽  
Spin Lattices ◽  
Moving Domain ◽  
Moving Domain Wall

Abstract One fundamental obstacle to efficient ferromagnetic spintronics is magnetic precession, which intrinsically limits the dynamics of magnetic textures. We experimentally demonstrate that this precession vanishes when the net angular momentum is compensated in domain walls driven by spin–orbit torque in a ferrimagnetic GdFeCo/Pt track. We use transverse in-plane fields to provide a robust and parameter-free measurement of the domain wall internal magnetisation angle, demonstrating that, at the angular compensation, the DW tilt is zero, and thus the magnetic precession that caused it is suppressed. Our results highlight the mechanism of faster and more efficient dynamics in materials with multiple spin lattices and vanishing net angular momentum, promising for high-speed, low-power spintronic applications.

Interaction of moving domain walls with constant magnetic fields in iron borate and yttrium orthoferrite single crystals

2016 ◽  
Author(s):  
Evgenij A. Zhukov ◽  
Maria E. Adamova ◽  
Olga Yu. Komina ◽  
Aleksandr V. Kaminsky ◽  
Valentina I. Zhukova
Keyword(s):  
Magnetic Fields ◽  
Single Crystals ◽  
Domain Walls ◽  
Iron Borate ◽  
Yttrium Orthoferrite ◽  
Moving Domain

scholarly journals Current-Driven Domain Wall Motion in Curved Ferrimagnetic Strips Above and Below the Angular Momentum Compensation

2021 ◽  
Vol 9 ◽  
Author(s):  
D. Osuna Ruiz ◽  
O. Alejos ◽  
V. Raposo ◽  
E. Martínez
Keyword(s):  
Angular Momentum ◽  
Domain Wall ◽  
High Speed ◽  
Wall Motion ◽  
Domain Walls ◽  
Relaxation Times ◽  
Domain Wall Motion ◽  
Current Density Distribution ◽  
Terminal Velocity ◽  
Artificial System

Current driven domain wall motion in curved Heavy Metal/Ferrimagnetic/Oxide multilayer strips is investigated using systematic micromagnetic simulations which account for spin-orbit coupling phenomena. Domain wall velocity and characteristic relaxation times are studied as functions of the geometry, curvature and width of the strip, at and out of the angular momentum compensation. Results show that domain walls can propagate faster and without a significant distortion in such strips in contrast to their ferromagnetic counterparts. Using an artificial system based on a straight strip with an equivalent current density distribution, we can discern its influence on the wall terminal velocity, as part of a more general geometrical influence due to the curved shape. Curved and narrow ferrimagnetic strips are promising candidates for designing high speed and fast response spintronic circuitry based on current-driven domain wall motion.

Spin-wave-driven high-speed domain-wall motions in soft magnetic nanotubes

2015 ◽  
Vol 118 (16) ◽  
pp. 163902 ◽  
Author(s):  
Jaehak Yang ◽  
Myoung-Woo Yoo ◽  
Sang-Koog Kim
Keyword(s):  
Domain Wall ◽  
Spin Wave ◽  
High Speed ◽  
Soft Magnetic ◽  
Magnetic Nanotubes

scholarly journals High-speed domain wall racetracks in a magnetic insulator

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Saül Vélez ◽  
Jakob Schaab ◽  
Martin S. Wörnle ◽  
Marvin Müller ◽  
Elzbieta Gradauskaite ◽  
...  
Keyword(s):  
Domain Wall ◽  
High Speed ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Nitrogen Vacancy ◽  
Electrical Currents ◽  
Magnetic Insulators ◽  
Magnetic Domain Walls ◽  
Current Threshold ◽  
Current Lines

Abstract Recent reports of current-induced switching of ferrimagnetic oxides coupled to heavy metals have opened prospects for implementing magnetic insulators into electrically addressable devices. However, the configuration and dynamics of magnetic domain walls driven by electrical currents in insulating oxides remain unexplored. Here we investigate the internal structure of the domain walls in Tm3Fe5O12 (TmIG) and TmIG/Pt bilayers, and demonstrate their efficient manipulation by spin–orbit torques with velocities of up to 400 ms−1 and minimal current threshold for domain wall flow of 5 × 106 A cm−2. Domain wall racetracks are defined by Pt current lines on continuous TmIG films, which allows for patterning the magnetic landscape of TmIG in a fast and reversible way. Scanning nitrogen-vacancy magnetometry reveals that the domain walls of TmIG thin films grown on Gd3Sc2Ga3O12 exhibit left-handed Néel chirality, changing to an intermediate Néel–Bloch configuration upon Pt deposition. These results indicate the presence of interfacial Dzyaloshinskii–Moriya interaction in magnetic garnets, opening the possibility to stabilize chiral spin textures in centrosymmetric magnetic insulators.

Influence of Constant Magnetic Field on Domain Wall Dynamics in YFeO3

2017 ◽  
Vol 265 ◽  
pp. 636-639
Author(s):  
O.Yu. Komina ◽  
E.A. Zhukov
Keyword(s):  
Magnetic Field ◽  
Domain Wall ◽  
Constant Magnetic Field ◽  
Domain Walls ◽  
Domain Wall Motion ◽  
Sample Plane ◽  
Domain Wall Dynamics ◽  
Yttrium Orthoferrite ◽  
Oriented Parallel ◽  
Alternating Magnetic Fields

The work presents the experimental results of the dynamics of the domain wall in the plate of yttrium orthoferrite. In our case the speeds of this motion are much less than the speeds of sound in these crystals. A constant magnetic field was oriented parallel to the plate along the domain wall motion and at the angle ≈ 50° to the sample plane and parallel to the plate along the DW motion. We consider forced vibrations of the domain wall under the influence of weak alternating magnetic fields. The domain walls motion was caused by an alternating magnetic field, which was generated by the coils. The effect of the constant magnetic field on the domain wall dynamics has been found.

Sign in / Sign up

Export Citation Format

Share Document