Results 71 to 80 of about 7,578 (209)

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

Current‐Driven Nonreciprocal Response of Nonequilibrium Skyrmions

Advanced Science, EarlyView.
A skyrmion holds great promise for spintronic applications owing to its intrinsic topological stability and high mobility under ultra‐low current excitation. Here, by means of in situ electron microscopy, we demonstrate a skyrmion diode effect and the associated current‐driven nonreciprocal skyrmion dynamics in a designed FeGe‐based microdevice.
Xiuzhen Yu, Soju Furuta, Xichao Zhang, Yi‐Ling Chiew, Kiyomi Nakajima, Kosuke Karube, Naoya Kanazawa, Yasujiro Taguchi, Yoshinori Tokura, Masahito Mochizuki, Fumitaka Kagawa   +10 more
wiley   +1 more source

Current-induced instability of domain walls in cylindrical nanowires

, 2017
We study the current-driven domain wall (DW) motion in cylindrical nanowires using micromagnetic simulations by implementing the Landau-Lifshitz-Gilbert equation with nonlocal spin-transfer torque in a finite difference micromagnetic package.
Fangohr, Hans, Mu, Congpu, Pepper, Ryan A., Wang, Weiwei, Zhang, Zhaoyang, Zhou, Yan   +5 more
core   +1 more source

Micromagnetic simulations of cylindrical magnetic nanowires [PDF]

, 2015
This chapter reviews micromagnetic simulations of cylindrical magnetic nanowires and their ordered arrays. It starts with a description of the theoretical background of micromagnetism. The chapter discusses main magnetization reversal modes, domain wall types, and state diagrams in cylindrical nanowires of different types and sizes.
Ivanov, Yurii P., Chubykalo-Fesenko, O.
openaire   +2 more sources

Enhanced High Dimensionality and the Information Processing Capacity in Interfered Spin Wave‐Based Reservoir Computing, Achieved With Eight Detectors

Advanced Electronic Materials, EarlyView.
Physical reservoir computing (PRC) based on spin wave interference has demonstrated high computational performance, yet room for improvement remains. In this study, we fabricated this concept PRC with eight detectors and evaluated the impact of the number of detectors using a chaotic time series prediction task.
Sota Hikasa, Wataru Namiki, Daiki Nishioka, Maki Nishimura, Ryo Iguchi, Kazuya Terabe, Takashi Tsuchiya   +6 more
wiley   +1 more source

Harnessing Digital Microstructure for Simulation‐Guided Optimization of Permanent Magnets

Advanced Intelligent Discovery, EarlyView.
An experimental‐to‐computational workflow is presented that transforms experimental 3D focused ion beam‐scanning electron microscopy data into a simulation‐ready digital microstructure for multiphase functional materials. Using heavy‐rare‐earth‐free Nd–Fe–B magnets as a model system, the approach quantifies grain connectivity across complex secondary ...
Nikita Kulesh, Anton Bolyachkin, Hajime Nakamura, Tadakatsu Ohkubo, Hossein Sepehri‐Amin   +4 more
wiley   +1 more source

Domain wall-based spin-Hall nano-oscillators

, 2018
In the last decade, two revolutionary concepts in nano magnetism emerged from research for storage technologies and advanced information processing. The first suggests the use of magnetic domain walls (DWs) in ferromagnetic nanowires to permanently store
Arekapudi, S. S. P. K., Awad, A. A., Fassbender, J., Hellwig, O., Körber, L., Mühl, T., Puwenberg, N., Sato, N., Schultheiss, H., Schultheiss, K.   +9 more
core   +1 more source

Imaging and Linking Spatial Magnetic Nanoparticle Distribution to Microbead Torques Using Soft X‐Ray Laminography

Advanced Physics Research, EarlyView.
Nanoscale 3D imaging of superparamagnetic microbeads via soft X‐ray laminography reveals the structural origin of the observed torques in cell movement experiments. These microbeads are found to have an uneven distribution of magnetic magnetite nanoparticles.
Findan Block, Finn Klingbeil, Dennis Seidler, Christine Arndt, Sandra Sindt, Katharina Witte, Benjamin Watts, Jörg Raabe, Christine Selhuber‐Unkel, Jeffrey McCord   +9 more
wiley   +1 more source

Implementation of Highly Reliable and Energy‐Efficient Nonvolatile In‐Memory Computing using Multistate Domain Wall Spin–Orbit Torque Device

Advanced Intelligent Systems, 2022
Emerging in‐memory computing (IMC) technology promises to tackle the memory wall bottleneck in modern systems. Promoted as a promising building block, nonvolatile spin–orbit torque (SOT) memory devices with sub‐ns and sub‐pJ processing capabilities are ...
Huai Lin, Nuo Xu, Di Wang, Long Liu, Xuefeng Zhao, Yongjian Zhou, Xuming Luo, Cheng Song, Guoqiang Yu, Guozhong Xing   +9 more
doaj   +1 more source

Magnetization precession due to a spin polarized current in a thin nanoelement: numerical simulation study

, 2005
In this paper a detailed numerical study (in frames of the Slonczewski formalism) of magnetization oscillations driven by a spin-polarized current through a thin elliptical nanoelement is presented. We show that a sophisticated micromagnetic model, where
D. V. Berkov, D. V. Berkov, D. V. Berkov, G. Herzer, L. D. Landau, N. L. Gorn, P. E. Kloeden, S. Chikazumi, W. Doering   +8 more
core   +1 more source