IEEE Transactions on Magnetics最新文献_第2页

Ferromagnetic Hysteresis Behavior of Ferroic and Multiferroic Ceramics From 100 to 400 K for Nonlinear Pulse Forming Line Applications

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-30 DOI: 10.1109/TMAG.2024.3524335

Travis D. Crawford;Andrew J. Romes;Somnath Sengupta;Allen L. Garner

{"title":"Ferromagnetic Hysteresis Behavior of Ferroic and Multiferroic Ceramics From 100 to 400 K for Nonlinear Pulse Forming Line Applications","authors":"Travis D. Crawford;Andrew J. Romes;Somnath Sengupta;Allen L. Garner","doi":"10.1109/TMAG.2024.3524335","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3524335","url":null,"abstract":"Microwave generation in ferromagnetic nonlinear pulse forming lines (NPFLs) depends strongly on material properties, particularly the damped gyromagnetic precession of a ferrite’s magnetic moments. Additionally, temperature-dependent material properties, such as saturation magnetization and coercivity, are critical for assuring stable operation due to their influence on the output center frequency. In this study, we measured the temperature-dependent hysteresis behavior of both ferrous and multiferroic composites for NPFL applications. We manufactured ferrous materials [nickel zinc ferrite (NZF), yttrium iron garnet (YIG), and cobalt ferrite (CoFe)] using the standard ceramic processing methods and characterized them from 100 to 400 K using vibrating sample magnetometry. Additionally, multiferroic materials were manufactured by adding barium strontium titanate (BST) and were characterized using the same methods. Most ferroic and multiferroic samples agree with Kneller’s and Bloch’s laws, which state that the temperature-dependent coercivity and saturation magnetization vary as <inline-formula> <tex-math>$T^{1/2}$ </tex-math></inline-formula> and <inline-formula> <tex-math>${T}^{3/2}$ </tex-math></inline-formula>, respectively. Cobalt samples deviated slightly from Kneller’s law, while NZF deviated from Bloch’s law at temperatures below 200 K. For all samples, saturation magnetization decreased with increasing temperature and coercivity increased with decreasing temperature. These results provide a baseline analysis into temperature-dependent material properties for NPFL applications.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-6"},"PeriodicalIF":2.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107038","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}

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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 : 2024-12-30 DOI: 10.1109/TMAG.2024.3520458

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IEEE Magnetics Society Distinguished Lecturers for 2025 2025年IEEE磁学学会杰出讲师

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-30 DOI: 10.1109/TMAG.2024.3514012

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IEEE Magnetics Society Information IEEE磁学学会信息

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-30 DOI: 10.1109/TMAG.2024.3520456

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Effects of Nb Content on the Microstructure and Magnetic Properties of the Sm₁.₂Zr₀.₂(Fe₀.₈Co₀.₂)₁₁.₅-ₓ Ti₀.₅Nbₓ (x=0 –0.4, at.%) Alloys

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-20 DOI: 10.1109/TMAG.2024.3520698

Shuainan Xu;Jinbo Wei;Chengli Li;Yan Wang;Zhen Shi;Xiaolian Liu;Yuan Hong;Anjian Pan;Yancheng Kong;Lizhong Zhao;Xuefeng Zhang

{"title":"Effects of Nb Content on the Microstructure and Magnetic Properties of the Sm₁.₂Zr₀.₂(Fe₀.₈Co₀.₂)₁₁.₅-ₓ Ti₀.₅Nbₓ (x=0 –0.4, at.%) Alloys","authors":"Shuainan Xu;Jinbo Wei;Chengli Li;Yan Wang;Zhen Shi;Xiaolian Liu;Yuan Hong;Anjian Pan;Yancheng Kong;Lizhong Zhao;Xuefeng Zhang","doi":"10.1109/TMAG.2024.3520698","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3520698","url":null,"abstract":"ThMn12-type SmFe12-based magnet is suggested to be a promising permanent magnet because of its intrinsic magnetic properties and thermal stability. However, their potential applications are currently limited, as the existence of a soft magnetic <inline-formula> <tex-math>$alpha $ </tex-math></inline-formula>-Fe phase in the alloy deteriorates the hard magnetic properties. Hence, in this work, Nb element was introduced into the SmFe12 alloy to inhibit the precipitation of <inline-formula> <tex-math>$alpha $ </tex-math></inline-formula>-(Fe, Co) phase, and the effects of Nb addition on the microstructure and magnetic properties of melt-spun, hot-pressed (HP), and hot-deformed (HD) Sm1.2Zr0.2(Fe0.8Co0.2)11.5-x Ti0.5Nbx (<inline-formula> <tex-math>${x} =0$ </tex-math></inline-formula>–0.4, at.%) alloys were systematically investigated. Experimental results indicate that the additional Nb element could increase the glass-forming ability and thus inhibit the formation of the <inline-formula> <tex-math>$alpha $ </tex-math></inline-formula>-(Fe, Co) phase in the melt-spun ribbon. However, a zero-field shoulder appears in the demagnetization curves of the heat-treated ribbons due to the appearance of <inline-formula> <tex-math>$alpha $ </tex-math></inline-formula>-(Fe, Co) phase, which could be suppressed by the HP process. As a result, the coercivity of Nb =0.2 HP magnet reaches 3.8 kOe, and the magnetic energy product (BH)max reaches 58.40 kJ/m3. Furthermore, a weak (001) texture of the 1:12 phase is obtained for the one-step HD magnet from the amorphous ribbons, which results in a remanence <inline-formula> <tex-math>${J} _{text {r}}$ </tex-math></inline-formula> of 0.11 T higher in the direction parallel to the c-axis compared to the direction perpendicular to the c-axis. The present result suggests a route to fabricate high-performance bulk SmFe12-based permanent magnets.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-6"},"PeriodicalIF":2.1,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107043","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}

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A Novel Hybrid Multi-Objective Optimization Algorithm and Its Application to Designs of Electromagnetic Devices

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-19 DOI: 10.1109/TMAG.2024.3519202

Yilun Li;Zhengwei Xie;Shiyou Yang;Zhuoxiang Ren

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Zero-Order Electromagnetic Vibration Suppression of Permanent Magnet Synchronous Motor With Harmonic Currents Injection

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-18 DOI: 10.1109/TMAG.2024.3519574

Bingdong Wang;Daohan Wang;Jun Nie;Wenqiang Miao;Chenqi Wang;Xiuhe Wang

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Inductance Derivation and Experimental Verification According to Operating Range of Interior Permanent Magnet Synchronous Motor

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-18 DOI: 10.1109/TMAG.2024.3519739

Kyeong-Won Kwak;Su-Min Kim;Sang-Hyeop Kim;Yong-Joo Kim;Kyung-Hun Shin;Jang-Young Choi

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Prediction Model of Torque Control Parameters Considering Temperature Dependency of IPMSM

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-18 DOI: 10.1109/TMAG.2024.3519579

Vu-Khanh Tran;Jae-Gil Lee;Pil-Wan Han;Yon-Do Chun

{"title":"Prediction Model of Torque Control Parameters Considering Temperature Dependency of IPMSM","authors":"Vu-Khanh Tran;Jae-Gil Lee;Pil-Wan Han;Yon-Do Chun","doi":"10.1109/TMAG.2024.3519579","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3519579","url":null,"abstract":"This study proposes a computationally efficient torque estimation model for the interior permanent magnet synchronous motor (IPMSM), considering the temperature-dependent magnetic properties of the permanent magnet (PM). It is well known that the magnetic flux of the IPMSM is caused by both the PM and the current source in the stator winding. Hence, the magnetic torque depends on PM temperature as PM flux varies with temperature variation. Using finite element analysis (FEAs), the proposed model accounts for nonlinear characteristics, such as <inline-formula> <tex-math>$d, q$ </tex-math></inline-formula> cross-coupling and saturation effects based on flux linkage mapping. Moreover, the static FEA is conducted to achieve time-efficient computation, and the least number of required simulations is considered. An IPMSM designed for the target high-speed train traction motor is employed to validate the proposed method. Validation is conducted by comparing the results obtained from the proposed prediction model with the results from time-transient (TT) FEA at different PM temperatures. The results show a good agreement between the proposed method and the FEA results while significant reduction simulation time.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107161","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}

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A New Hybrid Algorithm Based on PSO and Fireworks Algorithm for Optimal Design of Metasurface Absorber in RF Energy Harvesting

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-17 DOI: 10.1109/TMAG.2024.3519201

Na Chen;Shiyou Yang;Siguang An

{"title":"A New Hybrid Algorithm Based on PSO and Fireworks Algorithm for Optimal Design of Metasurface Absorber in RF Energy Harvesting","authors":"Na Chen;Shiyou Yang;Siguang An","doi":"10.1109/TMAG.2024.3519201","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3519201","url":null,"abstract":"To address the nonlinear, multimodal, and computationally intensive challenges inherent in the optimal design of metasurface absorbers for radio frequency (RF) energy harvesting, we propose an innovative hybrid algorithm that combines particle swarm optimization (PSO) and fireworks algorithm (FWA). The proposed hybrid algorithm features several enhancements: 1) a quasi-scaling (Q.S.) mechanism, inspired by the frequency response of electromagnetic (EM) devices shifting with the scaling of physical parameters, is developed to balance the exploration and exploitation searches; 2) a self-adaptive inertia weight is introduced to enhance the convergence speed; and 3) an elite-preservation strategy is employed to ensure a global convergence. The effectiveness and merits of the proposed algorithm are validated by solving first mathematical test functions; then, two practical cases: a multi-band absorber (1.8–3 GHz, 5.85 GHz) and a broadband absorber (8–15 GHz), where a new dual-polarized metasurface absorber topology is employed. Both cases are efficiently optimized, demonstrating high absorption efficiencies within the targeted bands, and validated by both simulated and measured results.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107113","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}

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