Results 41 to 50 of about 1,352 (179)

Room‐Temperature Skyrmionic Synapse in 2D Ferromagnet Fe3GaTe2 Operating via Collective Spin Texture Transformation

Advanced Materials, EarlyView.
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang, Tongji Zhu, PeiYu Cai, Xiaoming Ma, Zhen Wang, Ruifu Zhang, Yi Hao, Jingdi Lu, Liubing He, Jun Xu, Yuejie Zhang, Wanjun Jiang, Jing Tao, Shiming Lei, Pavel Parchinskiy, Jing Teng, Lingfei Wang, Wei Niu, Elton J.G. Santos, Xiaoqian Zhang, Peng Li   +20 more
wiley   +1 more source

Micromagnetic Simulation of Domain Walls in Exchange Spring Trilayers

Advances in Condensed Matter Physics, 2014
Chiral domain wall structures in ferromagnetic exchange spring soft/hard/soft and hard/soft/hard trilayers were investigated with micromagnetic simulation, which enables us to fully characterize the nucleation and growth of buried domain walls in layered
Zijun Wang, Xingqiao Ma, Houbing Huang, Hongwen Xiao, Tianfu Li   +4 more
doaj   +1 more source

Ultrafast dynamics of a magnetic antivortex: Micromagnetic simulations [PDF]

Physical Review B, 2008
The antivortex is a fundamental magnetization structure which is the topological counterpart of the well-known magnetic vortex. We study here the ultrafast dynamic behavior of an isolated antivortex in a patterned Permalloy thin-film element. Using micromagnetic simulations we predict that the antivortex response to an ultrashort external field pulse ...
Gliga, S., Yan, M., Hertel, R., Schneider, C. M.   +3 more
openaire   +3 more sources

Switchable Magnonic Crystals Based on Spin Crossover/CrSBr Heterostructures

Advanced Materials, EarlyView.
Multiscale modeling is employed to investigate the functionality of a light‐controlled, tunable magnonic crystal based on spin‐crossover Fe‐pz molecules integrated with a monolayer of CrSBr. Ab initio simulations confirm that the molecules remain functional on the CrSBr surface, while a semiclassical elastic model demonstrates that light‐induced ...
Andrei Shumilin, Sourav Dey, Denisa Coltuneac, Laurentiu Stoleriu, José J. Baldoví   +4 more
wiley   +1 more source

Stray Magnetic Field Variations and Micromagnetic Simulations: Models for Ni_0.8Fe_0.2 Disks Used for Microparticle Trapping

Micromachines
Patterned micro-scale thin-film magnetic structures, in conjunction with weak (~few tens of Oe) applied magnetic fields, can create energy landscapes capable of trapping and transporting fluid-borne magnetic microparticles.
Gregory B. Vieira, Eliza Howard, Prannoy Lankapalli, Iesha Phillips, Keith Hoffmeister, Jackson Holley   +5 more
doaj   +1 more source

A Gauss–Seidel Projection Method for Micromagnetics Simulations [PDF]

Journal of Computational Physics, 2001
The dynamics of the magnetization distribution in a ferromagnetic thin film problem is studied in this paper. The relaxation process of the magnetization distribution in a ferromagnetic material is described by the Landau-Lifshitz equation for the saturation magnetization \(M = M(t)\). On of the main difficulties in micromagnetic simulation is a severe
Wang, Xiao Ping, Garcia-Cervera, Carlos, Weinan, E.W.   +2 more
openaire   +3 more sources

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Numerical Simulations in Micromagnetism

, 2017
Ao nível quântico, os materiais ferromagnéticos são caracterizados por magnetismo resultante do spin dos eletrões cuja descrição completa requer a aplicação da Mecânica Quântica. Estes materiais quando T
openaire   +2 more sources

Tailoring Successive Magnetic‐Dielectric Synergy for Enhancing Electromagnetic Absorption in Ultralong Heterostructure Chains Assisted by High Static Magnetic Field

Advanced Science, EarlyView.
This work proposes a high static magnetic field (HSMF) driven dual‐low‐dimension strategy for fabricating magnetic‐dielectric heterostructure (Fe3O4@MoS2) chains with programmable lengths. The constructed successive magnetic‐dielectric synergy, arising from uniaxial anisotropy‐enhanced magnetic response and abundant heterointerfaces that boost ...
Zhuolin Li, Meilong Feng, Wenbo Gao, Tianxiang Zheng, Wenhao Lin, Yunbo Zhong   +5 more
wiley   +1 more source

Domain wall creep motion dynamics in CoFeB nanowire strips of different thicknesses using micromagnetic simulation approach [PDF]

ITM Web of Conferences
Field-induced domain wall motion on thin magnetic films with perpendicular anisotropy has long been attributed with the universal creep theory, in which the domain wall (DW) is able to experience a slow-moving motion with driving fields below the ...
Nugraha Raditya, Djuhana Dede, Kurniawan Candra   +2 more
doaj   +1 more source