IEEE Transactions on Magnetics最新文献_第2页

Strategies for Global Topology Optimization for Given Stray Field Distributions 给定杂散场分布的全局拓扑优化策略

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-24 DOI: 10.1109/TMAG.2025.3554430

Florian Slanovc;Michael Ortner;Gregor Wautischer;Paul Heistracher;Claas Abert;Dieter Suess

引用次数: 0

Physics-Informed Neural Network for Solving 1-D Nonlinear Time-Domain Magneto-Quasi-Static Problems 求解一维非线性时域磁准静态问题的物理信息神经网络

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-20 DOI: 10.1109/TMAG.2025.3553236

Ziqing Guo;Binh Nguyen;Ruth V. Sabariego

引用次数: 0

Magneto-Mechanical Effects in an Atomistic Spin Model 原子自旋模型中的磁-机械效应

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-20 DOI: 10.1109/TMAG.2025.3553439

Yu-Ching Hsiao;Oleg Udalov;Farzad Mahfouzi;Igor Beloborodov;Nicholas Kioussis;Gregory Carman;Christopher Lynch

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Effect of Seed Layer Annealing on Perpendicular Magnetic Anisotropy in Pt/Co/Pt Trilayers Deposited on Si Substrates With Cu Seed Layers 种子层退火对Cu种子层沉积Pt/Co/Pt三层薄膜垂直磁各向异性的影响

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-19 DOI: 10.1109/TMAG.2025.3552816

Jeongjun Kim;Joonghoe Dho

{"title":"Effect of Seed Layer Annealing on Perpendicular Magnetic Anisotropy in Pt/Co/Pt Trilayers Deposited on Si Substrates With Cu Seed Layers","authors":"Jeongjun Kim;Joonghoe Dho","doi":"10.1109/TMAG.2025.3552816","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3552816","url":null,"abstract":"Pt/Co/Pt trilayers with perpendicular magnetic anisotropy (PMA) were deposited onto Si substrates with Cu seed layers, which were thermally annealed at various temperatures to alter their surface roughness. Annealing at temperatures up to <inline-formula> <tex-math>$475~^{circ }$ </tex-math></inline-formula>C induced significant grain growth in the 5 nm thick Cu seed layer, substantially increasing its surface roughness. At <inline-formula> <tex-math>$500~^{circ }$ </tex-math></inline-formula>C, the root-mean-square (rms) roughness of the Cu seed layer surpassed the 0.8 nm thickness of the Co layer, potentially disrupting its continuity. This increased surface roughness created pinning sites that significantly enhanced coercivity—up to approximately 430% compared to the as-deposited trilayer—by impeding domain wall motion. However, the excessive roughness at <inline-formula> <tex-math>$500~^{circ }$ </tex-math></inline-formula>C weakened ferromagnetic exchange interactions between Co spins, diminishing PMA and coercivity. Magnetic domain images revealed that the increasing Cu layer roughness promoted the formation of new domain nucleation sites while reducing domain wall velocity. These findings demonstrate that the perpendicular magnetic properties of the Pt/Co/Pt layer can be controlled by the microstructural characteristics of the underlying seed layer.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 5","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency Enhancement in Spin-Orbit Torque MRAM With Low Resistivity and High Spin Hall Angle in Ta/Pt Multilayer Channel 低电阻率高自旋霍尔角自旋-轨道转矩MRAM在Ta/Pt多层通道中的效率提升

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-17 DOI: 10.1109/TMAG.2025.3552339

Hyun-Jun Lee;Ji-Won Yoon;Soeun Ahn;Dong-Soo Han;Byong-Guk Park;Byeong-Kwon Ju;Seung-Heon Chris Baek

引用次数: 0

Three-Dimensional Electromagnetic Analytical Model of 6-DOF Maglev Planar Motor With Passive Halbach PM Mover 无源Halbach永磁电机六自由度磁悬浮平面电机的三维电磁解析模型

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-12 DOI: 10.1109/TMAG.2025.3550556

Yixing Wang;Jianhu Yan;Long Zhang;Liming Yuan

{"title":"Three-Dimensional Electromagnetic Analytical Model of 6-DOF Maglev Planar Motor With Passive Halbach PM Mover","authors":"Yixing Wang;Jianhu Yan;Long Zhang;Liming Yuan","doi":"10.1109/TMAG.2025.3550556","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3550556","url":null,"abstract":"The magnetic charge method (MCM) is usually used for analyzing the passive permanent magnet (PM) mover of maglev planar motor (MPM). However, this method cannot characterize the 3-D magnetic field of this mover type due to its lack of ability to model the magnetic field at the longitudinal end of the mover. In this article, a general 3-D electromagnetic analytical model based on the equivalent surface current method (SCM) is proposed, which can accurately characterize the 3-D magnetic field of this type of mover for future optimization. First, a single-degree-of-freedom (DOF) 3-D analytical model of a single-set Halbach PM array is established by the equivalent SCM, and an analytical algorithm based on 3-D spatial transformation and magnetic vector mapping is proposed to extend the single-DOF to 6-DOF model. Then, the 6-DOF 3-D electromagnetic analytical model of the passive Halbach PM mover of the MPM is obtained by using the principle of magnetic field superposition. Furthermore, in order to verify the accuracy of this model, a 3-D finite element analysis (FEAs) of the Halbach PM array and the mover of MPM are implemented and compared with the analytical method. Besides, in order to verify the generality of this improved analytical model, another passive Halbach PM mover type with triangular array was also analyzed and compared. Finally, a test platform is built to measure the magnetic field of the mover of MPM and experimental results were compared with the SCM and finite element method (FEM). The results indicate that this improved analytical model can be used to characterize the 3-D magnetic field of the Halbach PMs and the movers of MPM accurately, which can provide a basis for the study of the end effect of PM array and the design optimization of the mover structure. Most importantly, the 3-D magnetic field analytical model presented in this article plays a crucial role in the detection of the mover’s pose in MPM.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 5","pages":"1-12"},"PeriodicalIF":2.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Direct Simulation Monte Carlo Study of the Environmental Conditions in Nanoscale Air Bearings Affecting Head Smear Formation 纳米尺度空气轴承中影响头部污迹形成的环境条件的直接模拟蒙特卡罗研究

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-07 DOI: 10.1109/TMAG.2025.3549056

Roshan Mathew Tom;David Bogy

引用次数: 0

Research on Performance Degradation Mechanism and Correction of Core Loss Model of Amorphous Alloys Based on Wire Cutting 基于线切割的非晶合金性能退化机理及芯损模型修正研究

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-03-06 DOI: 10.1109/TMAG.2025.3548722

Zhixiao Zhao;Shuheng Qiu;Jinhua Chen;Derang Cao;Ruilin Pei;Huiqin Sun;Chi Zhang

{"title":"Research on Performance Degradation Mechanism and Correction of Core Loss Model of Amorphous Alloys Based on Wire Cutting","authors":"Zhixiao Zhao;Shuheng Qiu;Jinhua Chen;Derang Cao;Ruilin Pei;Huiqin Sun;Chi Zhang","doi":"10.1109/TMAG.2025.3548722","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3548722","url":null,"abstract":"Amorphous alloys (AAs) exhibit low core loss, making them ideal for high-speed motor cores, significantly enhancing motor efficiency. However, the performance of AAs declines after being processed into cores, leading to significant calculation errors in AA core loss and reducing motor design accuracy. Consequently, identifying the causes of performance degradation in AAs after wire-cut electrical discharge machining (WEDM) and establishing an accurate core loss calculation model poses a significant challenge. This article analyzes the magnetic properties, nanoindentation, micromorphology, and composition of AA samples, proposing a performance degradation mechanism for WEDM-formed AA cores based on electrochemical corrosion through comparisons to original thin ribbons. By constructing the relationship between magnetic properties and the content of corrosion products in WEDM-formed AAs, we establish a core loss calculation model rooted in the performance degradation mechanism. The model’s accuracy is validated through magnetic properties tests, demonstrating strong generalization ability and providing a valuable reference for evaluating high-speed motor performance.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 5","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control-Oriented Modeling of Single-Phase Transformers 面向控制的单相变压器建模

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-02-28 DOI: 10.1109/TMAG.2025.3546744

Nicolai Schwartze;Sonja Moschik;Markus Reichhartinger

{"title":"Control-Oriented Modeling of Single-Phase Transformers","authors":"Nicolai Schwartze;Sonja Moschik;Markus Reichhartinger","doi":"10.1109/TMAG.2025.3546744","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3546744","url":null,"abstract":"A control-oriented mathematical model for single-phase transformers, including the effects of saturation, hysteresis, and classical eddy current losses, is proposed. The model equations are derived by combining the mechanical and electrical properties of the ferromagnetic transformers’ core. This approach offers the flexibility for model enhancement by providing a procedure for incorporating additional domain-specific effects. It is shown that the model satisfies well-established properties of systems with hysteresis. The model is mathematically analyzed and experimentally validated on different transformers, confirming the applicability for a wide range of devices. Furthermore, it is demonstrated that the model structure is independent of any specific choice of the input signal form by reproducing experimental results for both sinusoidal and rectangular excitation voltages. The proposed model is compared with a single-phase transformer model based on the well-recognized Jiles-Atherton hysteresis model, which generally highlights the competitiveness in terms of accuracy and required computational effort for simulation studies. Therefore, the model is well suited for model-based controller design tasks and real-time applications.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 5","pages":"1-12"},"PeriodicalIF":2.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10908232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IEEE Transactions on Magnetics Publication Information IEEE电磁学学报出版信息

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-02-26 DOI: 10.1109/TMAG.2025.3542946

引用次数: 0