IEEE Magnetics Letters最新文献_第3页

Spatial Sensitivity of Magnetoelectric Composite Under Nonuniform Magnetic Excitation 非均匀磁激励下磁电复合材料的空间灵敏度

IF 1.6 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2026-01-01 Epub Date: 2026-03-29 DOI: 10.1109/LMAG.2026.3698302

Sai Harsha Somavarapu;Kondaiah P

{"title":"Spatial Sensitivity of Magnetoelectric Composite Under Nonuniform Magnetic Excitation","authors":"Sai Harsha Somavarapu;Kondaiah P","doi":"10.1109/LMAG.2026.3698302","DOIUrl":"https://doi.org/10.1109/LMAG.2026.3698302","url":null,"abstract":"Magnetoelectric (ME) sensors are traditionally characterized under spatially uniform magnetic fields, where their performance is summarized by the ME coupling coefficient. This approach implicitly treats the sensor as a lumped element and neglects its spatial extent. In practical applications, sensing scenarios involve localized or gradient-dominated magnetic fields, where the spatial distribution of excitation directly influences the generated strain and output voltage in the ME sensor. In this work, the response of the strain-mediated ME laminate is systematically investigated under both uniform magnetic excitation and dipole, nonuniform, spatially varying magnetic fields. A spatial sensitivity mapping framework is introduced to quantify ME sensor behavior under nonuniform excitation. Experimental measurements of dipole-induced scaling and lateral response show good agreement with numerical predictions, validating the modeled approach. The results reveal the localized strain concentration, strong distance-dependent decay, and directional sensitivity that cannot be inferred from uniform field characterization alone. These findings demonstrate that uniform-field metrics are insufficient for predicting real-world sensor performance and establish spatial characterization as a necessary complement for practical ME sensing applications, such as magnetic particle mapping and health monitoring in mechanical systems.","PeriodicalId":13040,"journal":{"name":"IEEE Magnetics Letters","volume":"17 ","pages":"8100105-8100105"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148483525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning the Remanent Magnetic State in Square Ferromagnetic Nanorings 方形铁磁纳米环剩磁态的调谐

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2026-01-01 Epub Date: 2026-03-16 DOI: 10.1109/LMAG.2026.3674354

Ceziana Pereira da Costa;Ana Lucia Dantas;Artur da Silva Carriço

引用次数: 0

Reconfigurable Bio-Plausible Spiking Neurons Based on Antiferromagnetic Skyrmions Utilizing Anisotropy Gradient 利用各向异性梯度的基于反铁磁Skyrmions的可重构生物似然spike神经元

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2026-01-01 Epub Date: 2026-04-17 DOI: 10.1109/LMAG.2026.3685158

Ravish Kumar Raj;Sharuar Hossain Jony;Purbak Sengupta;Sonal Shreya

{"title":"Reconfigurable Bio-Plausible Spiking Neurons Based on Antiferromagnetic Skyrmions Utilizing Anisotropy Gradient","authors":"Ravish Kumar Raj;Sharuar Hossain Jony;Purbak Sengupta;Sonal Shreya","doi":"10.1109/LMAG.2026.3685158","DOIUrl":"https://doi.org/10.1109/LMAG.2026.3685158","url":null,"abstract":"Biological neurons exhibit diverse spiking behaviors, such as fast, phasic, and bursting modes, which are essential for efficient neural communication. However, most spintronic neuromorphic systems remain limited to simplified leaky-integrate-and-fire (LIF) models due to the difficulty of realizing complex neuronal dynamics in hardware. In this work, we develop a reconfigurable spiking neuron based on the intrinsic dynamics of antiferromagnetic (AFM) skyrmions driven by an anisotropy gradient in structured nanotracks. By engineering an anisotropy gradient along a trapezoidal nanotrack, the device achieves multimodal LIF functionality without external current injection or additional hardware overhead. The nanotrack geometry naturally enables leaky integration, while controlled anisotropy modulation allows dynamic reconfiguration between fast, phasic, and bursting spiking modes. An artificial neural network constructed from these AFM skyrmions as neurons demonstrates improved Iris flower classification performance compared to conventional LIF-based models, highlighting their potential as an energy-efficient and bio-plausible neuromorphic computing platform.","PeriodicalId":13040,"journal":{"name":"IEEE Magnetics Letters","volume":"17 ","pages":"4500405-4500405"},"PeriodicalIF":1.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148003494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a Flexible Magnetic Catheter for Urinary Stone Removal 一种用于尿路结石清除的柔性磁导尿管的研制

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-12-03 DOI: 10.1109/LMAG.2025.3639932

Ly Phi Cuong;Binh Duy Le;Jong-Oh Park;Kim Tien Nguyen;Byungjeon Kang;Jayoung Kim

引用次数: 0

Magnetic Structures in Amorphous Glass-Coated Microwires Induced by Longitudinal and Transverse Stresses 纵向和横向应力诱导的非晶玻璃微丝的磁性结构

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-10-30 DOI: 10.1109/LMAG.2025.3627471

Alexander Chizhik;Valentina Zhukova;Arcady Zhukov

引用次数: 0

Understanding the Line Shape of Ferromagnetic Resonance Spectrum in a Flip-Chip Measurement 在倒装片测量中了解铁磁共振频谱的线形

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-10-30 DOI: 10.1109/LMAG.2025.3627467

Elyssa D. DeVisscher;Anna E. Mays;Xin Fan

引用次数: 0

Evaluation of Adjacent Track Erasure for Thermal Exchange Coupled Composite Media 热交换耦合复合介质相邻轨迹擦除的评价

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-09-10 DOI: 10.1109/LMAG.2025.3608663

Yijia Liu;R. H. Victora

{"title":"Evaluation of Adjacent Track Erasure for Thermal Exchange Coupled Composite Media","authors":"Yijia Liu;R. H. Victora","doi":"10.1109/LMAG.2025.3608663","DOIUrl":"https://doi.org/10.1109/LMAG.2025.3608663","url":null,"abstract":"In this letter, the effectiveness of a novel three-layer thermally exchanged coupled composite media (3ly-ECC) design is evaluated in enhancing magnetic recording performance, particularly, in mitigating adjacent track erasure (ATE). The performance of the proposed 3ly-ECCs is compared against the two-layer (2ly) counterparts at both high peak temperature (850 K) and reduced peak temperature (650 K). It is found that incorporating a high saturation magnetization in the top layer and a high anisotropy in the middle layer within the 3ly configurations yields a 15% reduction in ATE and a 0.6 dB gain in signal-to-noise ratio (SNR), at the expense of a tolerable 5% increase in transition jitter relative to the 2ly structures. These findings highlight, that with a high thermal gradient during the writing process, the combination of high-Ku and high-Ms media designs effectively suppresses thermally induced remanent noise, therefore, improving stability against off-track thermal perturbation. Nonetheless, the performance gains in ATE and SNR come with the acceptable tradeoff of transitijon jitter loss, which is a compromise that may be justified in high-density recording applications where minimizing intertrack interference is critical.","PeriodicalId":13040,"journal":{"name":"IEEE Magnetics Letters","volume":"16 ","pages":"1-5"},"PeriodicalIF":1.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145255897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploration of Synthesis Conditions for High-Magnetization Ba-Ca-Based W-Type Hexaferrites 高磁化ba - ca基w型六铁体合成条件的探索

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-08-15 DOI: 10.1109/LMAG.2025.3599741

Matsui Yosuke;Watanabe Kowashi;Kakizaki Koichi;Kamishima Kenji

{"title":"Exploration of Synthesis Conditions for High-Magnetization Ba-Ca-Based W-Type Hexaferrites","authors":"Matsui Yosuke;Watanabe Kowashi;Kakizaki Koichi;Kamishima Kenji","doi":"10.1109/LMAG.2025.3599741","DOIUrl":"https://doi.org/10.1109/LMAG.2025.3599741","url":null,"abstract":"This study presents the synthesis of W-type hexagonal ferrite (BaZn<inline-formula><tex-math>$_{2}$</tex-math></inline-formula>Fe<inline-formula><tex-math>$_{16}$</tex-math></inline-formula>O<inline-formula><tex-math>$_{27}$</tex-math></inline-formula>) using a powder metallurgy approach to enhance magnetic properties through controlled Ca doping. By identifying the crystalline phase and repeating to adjust the composition, we achieved a primary-phase W-type hexaferrite substituted with about Ba: Ca = 0.5: 0.5 in the chemical formula. Electron probe microanalysis results helped us reach the sample with Ba: Ca: Zn: Fe = 0.52: 0.48: 0.78: 10.73, demonstrating the highest magnetization of 131.0 A<inline-formula><tex-math>$cdot$</tex-math></inline-formula> m<inline-formula><tex-math>$^{2}$</tex-math></inline-formula>/kg at 1.8 K. Our findings suggest the magnetically optimal nature of this composition for Ca-substituted Ba-based W-type ferrite. This investigation contributes to understanding Ba-Ca-based W-type hexaferrite and provides a foundation for future exploration and optimization of its magnetic properties.","PeriodicalId":13040,"journal":{"name":"IEEE Magnetics Letters","volume":"16 ","pages":"1-5"},"PeriodicalIF":1.1,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection of GDF15 Protein Using Ultrabroadband Ferromagnetic Resonance of Magnetic Nanoparticles 磁性纳米粒子超宽带铁磁共振检测GDF15蛋白

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-07-24 DOI: 10.1109/LMAG.2025.3592474

Shin Yabukami;Ryoya Masui;Toru Murayama;Junichi Honda;Loi Tonthat;Kazuhiko Okita;Akihiro Kuwahata;Takaaki Abe

引用次数: 0

Simple and Rapid Controlling Method of Magnetic Anisotropy and Its Application to Thin-Film Magnetoimpedance Elements 磁各向异性的简单快速控制方法及其在薄膜磁阻抗元件中的应用

IF 1.1 4区物理与天体物理

IEEE Magnetics Letters Pub Date : 2025-07-18 DOI: 10.1109/LMAG.2025.3590624

Hiroaki Kikuchi

引用次数: 0