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The ultrafast magnetic dynamics in compensated ferrimagnets not only provides information similar to antiferromagnetic dynamics, but more importantly opens new opportunities for future spintronic devices [Kim et al., Nat. Mater. 16, 1187…

Applied Physics · Physics 2020-01-22 W. H. Li , Z. Jin , D. L. Wen , X. M. Zhang , M. H. Qin , J. M. Liu

We study current-induced domain-wall dynamics in a thin ferromagnetic nanowire. The domain-wall dynamics is described by simple equations with four parameters. We propose the procedure to determine these parameters by all-electric…

Mesoscale and Nanoscale Physics · Physics 2011-08-29 Y. Liu , Oleg A. Tretiakov , Ar. Abanov

Switching in magnetic materials gives rise to rich physical phenomena and lies at the heart of their technological applications. Although domain wall motion in ferro- and antiferromagnets has been studied, in spiral magnets it is still…

Strongly Correlated Electrons · Physics 2024-02-19 Francesco Foggetti , Margherita Parodi , Naoto Nagaosa , Sergey Artyukhin

The impact of current on static and kinetic depinning fields of a domain wall in an one dimensional ferromagnetic nanostrip is investigated by solving the Landau-Lifshitz-Gilbert equation with adiabatic and non-adiabatic spin-transfer…

Materials Science · Physics 2023-07-19 R. Arun , P. Sabareesan , M. Daniel

A parametrically forced sine-Gordon equation with a fast periodic {\em mean-zero} forcing is considered. It is shown that $\pi$-kinks represent a class of solitary-wave solutions of the equation. This result is applied to…

patt-sol · Physics 2009-10-31 Vadim Zharnitsky , Igor Mitkov , Mark Levi

We formulated a technique which combines the first-principles, micromagnetic and microstructural calculations and allows us to study the nature of hysteretic phenomena in hard magnets. Two distinct sources of coercivity in polytwinned CoPt…

Materials Science · Physics 2009-11-07 K. D. Belashchenko , V. P. Antropov

We developed a micromagnetic method for modeling magnetic systems with periodic boundary conditions along an arbitrary number of dimensions. The main feature is an adaptation of the Ewald summation technique for evaluation of long-range…

Mesoscale and Nanoscale Physics · Physics 2015-10-30 Aleksander L. Wysocki , Vladimir P. Antropov

We investigate the formation of stable one-dimensional N\'eel walls in a ferromagnetic slab with finite thickness and finite width. Taking into account the dipolar, the exchange and the uniaxial anisotropic crystalline field interactions,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Rafael M. Fernandes , Harry Westfahl , Rogério Magalhães-Paniago , Leticia N. Coelho

The domain wall response under constant external magnetic fields reveals a complex behavior where sample disorder plays a key role. Furthermore, the response to alternating magnetic fields has only been explored in limited cases and…

A model is studied for the theoretical description of nanoscale magnetic films with high perpendicular anisotropy. In the model the magnetic film is described in terms of single domain magnetic grains with Ising-like behavior, interacting…

Statistical Mechanics · Physics 2016-08-31 U. Nowak

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…

Materials Science · Physics 2024-01-25 David Osuna Ruiz , Óscar Alejos , Víctor Raposo , Eduardo Martínez

Magnetic sensors based on the magnetoresistance effects have a promising application prospect due to their excellent sensitivity and advantages in terms of the integration. However, competition between higher sensitivity and larger…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 Xueying Zhang , Nicolas Vernier , Zhiqiang Cao , Qunwen Leng , Anni Cao , Dafine Ravelosona , Weisheng Zhao

The present work is aimed at formulating equivalent boundary conditions for the electromagnetic field on the surface of a periodic grating of resistive strips valid for arbitrary incident fields. It is assumed that the period of the grating…

Classical Physics · Physics 2025-02-10 Igor M. Braver , Khona L. Garb

We have observed the eigenmodes of coupled transverse domain walls in a pair of ferromagnetic nanowires. Although the pair is coupled magnetostatically, its spectrum is determined by a combination of pinning by edge roughness and dipolar…

Materials Science · Physics 2014-07-29 Andrew T. Galkiewicz , Liam O'Brien , Paul S. Keatley , Russell P. Cowburn , Paul A. Crowell

We theoretically study domain wall oscillations upon the injection of a dc current through a geometrically constrained wire with perpendicular magnetic anisotropy. The oscillation frequency spectrum can be tuned by the injected current…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 A. Bisig , O. Boulle , M. Klaui

In elastically coupled multiferroic heterostructures that exhibit full domain correlations between ferroelectric and ferromagnetic sub-systems, magnetic domain walls are firmly pinned on top of ferroelectric domain boundaries. In this work…

The elastic interaction between kinks (and antikinks) within domain walls plays a pivotal role in shaping the domain structure, and their dynamics. In bulk materials, kinks interact as elastic monopoles, dependent on the distance between…

Mesoscale and Nanoscale Physics · Physics 2024-11-04 John J R Scott , Guangming Lu , Brian J. Rodriguez , Ian MacLaren , Ekhard K. H. Salje , Miryam Arredondo

We study theoretically the structure of domain walls in ferromagnetic states on Mobius strips. A two-dimensional classical Heisenberg ferromagnet with single-site anisotropy is treated within a mean-field approximation by taking into…

Statistical Mechanics · Physics 2009-11-13 Masanao Yoneya , Kazuhiro Kuboki , Masahiko Hayashi

The control of domain walls or spin textures is crucial for spintronic applications of antiferromagnets. Despite many efforts, it has been challenging to directly visualize antiferromagnetic domains or domain walls with nanoscale…

Materials Science · Physics 2020-03-06 Paul M. Sass , Wenbo Ge , Jiaqiang Yan , D. Obeysekera , J. J Yang , Weida Wu

We calculate the electron-mediated exchange interaction between two domain walls in magnetic wires. This corresponds to the equilibrium regime and, therefore, the interaction can be additionally controlled by an electric current. The…

Mesoscale and Nanoscale Physics · Physics 2011-11-17 N. Sedlmayr , V. K. Dugaev , M. Inglot , J. Berakdar