Results 41 to 50 of about 361 (179)

Micromagnetics of nanostructures [PDF]

Journal of Magnetism and Magnetic Materials, 2003
The results of numerical simulation of equilibrium magnetization patterns and magnetization reversal in flat cylindrical and elliptical particles of the soft magnetic type are discussed. It is found that the bending state originates in these particles due to instability of quasi-uniform magnetization at large enough in-plane sizes. Similar states exist
Usov, N. A., Grebenshchikov, Yu. B., Kurkina, L. G., Chang, Ching-Ray, Wei, Zung-Hang   +4 more
openaire   +2 more sources

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Radiation Resilient Synthetic Antiferromagnets‐Based Neuromorphic Device for Sea Surface Temperature Reconstruction

Advanced Science, EarlyView.
By leveraging strong antiferromagnetic coupling, radiation‐tolerant synthetic antiferromagnetic synaptic devices are developed. Their intrinsic nonlinearity emulates neuronal activation, while linear and symmetric conductance modulation mimics synaptic plasticity.
Mingxu Song, Jiahao Liu, Ruisheng Hu, Teng Xu, Aihua Tang, Zhihong Zhu   +5 more
wiley   +1 more source

Normal modes description of nonlinear ferromagnetic resonance for magnetic nanodots

AIP Advances, 2022
The spatially-inhomogeneous magnetization dynamics in a cylindrical magnetic nanodot driven by ac spin-torque is analyzed. To this end, the Landau-Lifshitz-Gilbert-Slonczewski equation is reformulated as a system of coupled nonlinear ordinary ...
S. Perna, F. Bruckner, C. Serpico, D. Suess, M. d’Aquino   +4 more
doaj   +1 more source

Néel‐Vector‐Dependent Unconventional Spin‐Orbit Torque for Deterministic Field‐Free Switching in NiO (110)‐Based Trilayers

Advanced Science, EarlyView.
Unconventional spin currents are generated in an antiferromagnetic NiO(110)/Ta/CoFeB trilayer, where the Néel vector governs spin transport. The resulting spin–orbit torques enable deterministic field‐free switching of perpendicular magnetization.
Hyeong‐Joo Seo, Seok‐Jong Kim, Phuoc Cao Van, Hong‐Cuong Truong, Dong‐Hyeon Han, Geunwoo Kim, Younghun Jo, Jong Hoon Jung, Soojung Kim, Chun‐Yeol You, Jong‐Ryul Jeong, Kyung‐Jin Lee, Byong‐Guk Park   +12 more
wiley   +1 more source

Programmable Topological Magnetic Textures in Above‐Room‐Temperature 2D Ferromagnet Fe3GaTe2

Advanced Science, EarlyView.
This work demonstrates the programmable generation and deterministic modulation of magnetic skyrmion bags with high‐order topological numbers in the above‐room‐temperature 2D ferromagnet Fe3GaTe2 (FGaT) via current‐pulse control. Furthermore, highly efficient electrical manipulation and current‐driven parallel motion of these high‐order topological ...
Hanqing Shi, Yilian Xi, Jingwei Zhang, Jiaqi Liu, Zhizhen Ren, Shilei Zhang, Weichang Hao, Haifeng Feng, Yi Du   +8 more
wiley   +1 more source

Modified Static Hysteresis Simulation Method for Electrical Equipment with Silicon Steel Core

Zhongguo dianli
Compared to traditional hysteresis models like Preisach and Jiles-Atherton (J-A), the micromagnetic Landau-Lifshitz-Gilbert (LLG) equation offers advantages such as clearer physical interpretation and higher simulation accuracy.
Ren LIU, Yu ZENG, Anlong HU, Bo TANG
doaj   +1 more source

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

Stabilization of Ultrafast Domain Wall Motion by Edge‐Anisotropy Engineering in Ferrimagnetic Nanowires

Advanced Electronic Materials, EarlyView.
Localized laser annealing transforms distorted, edge‐pinned domain‐wall motion in ferrimagnetic Pt/GdFe nanowires into straight, stable, and ultrafast propagation. Experiments and micromagnetic simulations reveal an optimum anisotropy‐engineering window in which moderate edge softening suppresses pinning, whereas excessive anisotropy reduction or ...
Mojtaba Mohammadi, Sina Ranjbar, Yoshinobu Nakatani, Benjamin Lilienthal‐Uhlig, Kenji Tanabe, Hiroyuki Awano   +5 more
wiley   +1 more source

Time Average in Micromagnetism

Journal of Differential Equations, 1998
The authors consider a ferromagnetic material whose properties are defined by Maxwell's equations and a nonlinear Landau-Lifschitz equation and show that weak solutions exist. This is done by solving a relaxed system by the Galerkin process and allowing the parameter to tend to zero.
Carbou, Gilles, Fabrie, Pierre
openaire   +2 more sources