IEEJ Transactions on Electrical and Electronic Engineering最新文献

筛选
英文 中文
A Demand-Side Resource Selection Method for Feature Aggregation Based on Load Mapping 基于负载映射的特征聚合需求方资源选择方法
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-18 DOI: 10.1002/tee.24149
Bin Li, Tianyue Tang, Dan Wu, Shiming Tian, Yuting Xu, Shanshan Shi, Kaiyu Zhang
{"title":"A Demand-Side Resource Selection Method for Feature Aggregation Based on Load Mapping","authors":"Bin Li,&nbsp;Tianyue Tang,&nbsp;Dan Wu,&nbsp;Shiming Tian,&nbsp;Yuting Xu,&nbsp;Shanshan Shi,&nbsp;Kaiyu Zhang","doi":"10.1002/tee.24149","DOIUrl":"https://doi.org/10.1002/tee.24149","url":null,"abstract":"<p>In order to improve the intuitiveness and automation of demand-side resource selection, a demand-side resource selection method based on load mapping matching is proposed in view of the increasing challenges of supply–demand balance in power networks and the rapid development of power demand-side management technologies. First, a two-dimensional load mapping of demand-side resources is drawn, and the load mapping is processed by Gaussian convolutional difference method. Then, feature points are extracted and located for the target resources and the loads of other resources in the demand-side resource pool, and similar feature key point pairs of demand-side resources are obtained. Finally, the demand-side resources with similar load characteristics to the target resources in the resource pool are screened according to the number of similar feature key point pairs, and the load resources similar to the target resources are finally identified by dividing the resource selection into priority levels. The experimental results show that the method can effectively extract feature key points, clearly and intuitively represent the features of demand-side resource load mapping, and can match to load resources with similar characteristics, which greatly transforms the demand-side resource selection mode. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1788-1802"},"PeriodicalIF":1.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Improvement of AC Conditioning Effect in Vacuum by High Frequency Voltage 利用高频电压改善真空中的交流调节效果
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-17 DOI: 10.1002/tee.24139
Ryota Konagi, Hiroki Kojima, Shinsuke Iitsuka, Masato Kobayashi, Naoki Hayakawa
{"title":"Improvement of AC Conditioning Effect in Vacuum by High Frequency Voltage","authors":"Ryota Konagi,&nbsp;Hiroki Kojima,&nbsp;Shinsuke Iitsuka,&nbsp;Masato Kobayashi,&nbsp;Naoki Hayakawa","doi":"10.1002/tee.24139","DOIUrl":"https://doi.org/10.1002/tee.24139","url":null,"abstract":"<p>To improve the dielectric strength in vacuum, spark conditioning through repetitive breakdowns by AC or impulse voltage is an effective method. AC conditioning at commercial power frequencies has been widely used due to its cost-effectiveness, but the breakdown voltage after AC conditioning is generally lower compared to impulse conditioning. We have confirmed that multiple breakdowns occur successively in a half cycle of AC voltage application. It is considered that the multiple breakdowns are harmful for conditioning and triggered due to the previous breakdown in the same half cycle. In this paper, we discuss dielectric strength improvement by high frequency AC conditioning and how the multiple breakdowns are induced. We experimentally confirmed that the AC conditioning effect is improved by increasing the frequency of AC voltage for different applied AC conditioning voltages in a sphere-plane electrode system. We focused on the breakdown position from the light emission images during AC conditioning to investigate whether the multiple breakdowns were induced or affected by the previous breakdown. We found that the multiple breakdowns occurred close to the previous breakdown position. The multiple breakdowns would be induced by the collision of metal particles due to the previous breakdown with the counter electrode. These breakdowns do not contribute to removing protrusion and would lead to damage to the electrode surface. The increasing frequency of AC conditioning would suppress the multiple breakdowns and improve the dielectric strength in vacuum. © 2024 The Author(s). <i>IEEJ Transactions on Electrical and Electronic Engineering</i> published by Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1781-1787"},"PeriodicalIF":1.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/tee.24139","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142404820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Logistics Supply Chain Management and Control Based on Mobile Communication Technology 基于移动通信技术的物流供应链管理与控制
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-17 DOI: 10.1002/tee.24138
Jisheng Wang, Lingling Luo, Jipeng Wang
{"title":"Logistics Supply Chain Management and Control Based on Mobile Communication Technology","authors":"Jisheng Wang,&nbsp;Lingling Luo,&nbsp;Jipeng Wang","doi":"10.1002/tee.24138","DOIUrl":"https://doi.org/10.1002/tee.24138","url":null,"abstract":"<p>With the development and application of 5G technology, more efficient and faster mobile communication has become an essential tool in logistics transportation and warehousing processes. Logistics supply chain management (SCM) is a logistics management system centered around the core products or business of the supply chain, as well as a logistics management system organized around the core logistics business. As an important part of logistics SCM, logistics control requires real-time monitoring and adjustment of transportation, warehousing, distribution, and other links. Mobile communication technology can provide real-time positioning, tracking, monitoring, and data transmission functions, which provides strong technical support for logistics control. It can also optimize logistics scheduling and improve logistics efficiency and accuracy, thereby reducing transportation costs and improving logistics quality and efficiency. This article aimed to explore the relationship between mobile communication technology and logistics SCM and control, and to use Principal Component Analysis (PCA) for research. The research results indicated that under the same other conditions, 38 and 37 people rated the X system as liked by companies A and B, accounting for 95% and 92.5% respectively; only 4 and 1 people rated the Y system as liked, accounting for 10% and 2.5% respectively; the likes and dislikes of the X system were much higher than those of the Y system. This indicated a positive relationship between mobile communication technology and logistics SCM and control systems. Logistics SCM and control based on mobile communication technology has become an important direction and development trend in current research on logistics SCM and control. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 9","pages":"1475-1482"},"PeriodicalIF":1.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Filler Particle Size Effect on Electrically and Thermally Properties of Thermal Conductive Thermoplastic Polyimide/Hexagonal Boron Nitride Composite Materials Fabricated by the Electrostatic Adsorption Method 填料粒度对静电吸附法制备的导热热塑性聚酰亚胺/六方氮化硼复合材料电热性能的影响
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-17 DOI: 10.1002/tee.24135
Yoshinobu Murakami, Yujin Ichiba, Tomohiro Kawashima, Naohiro Hozumi
{"title":"Filler Particle Size Effect on Electrically and Thermally Properties of Thermal Conductive Thermoplastic Polyimide/Hexagonal Boron Nitride Composite Materials Fabricated by the Electrostatic Adsorption Method","authors":"Yoshinobu Murakami,&nbsp;Yujin Ichiba,&nbsp;Tomohiro Kawashima,&nbsp;Naohiro Hozumi","doi":"10.1002/tee.24135","DOIUrl":"https://doi.org/10.1002/tee.24135","url":null,"abstract":"<p>Composite materials with high heat dissipation and acceptable insulating properties are being developed. Minimizing filler contacts in the composite and is crucial for composite insulating materials. Here, an electrostatic adsorption method was used to prepare thermoplastic polyimide (tpPI) / orientation micro-sized hexagonal boron nitride (h-BN) composite insulating materials. Then the effects of h-BN particle size on the thermal conductivity and DC breakdown strength were investigated. Additionally, the finite element method was used for heat conduction analysis and the results were compared to the measurements. The particle size of the h-BN significantly influences the dc breakdown strength and the thermal conductivity. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 10","pages":"1590-1595"},"PeriodicalIF":1.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142123383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
EMI Shielding Properties of Al, Co, and Al/Co Thin Films 铝、钴和铝/钴薄膜的 EMI 屏蔽特性
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-13 DOI: 10.1002/tee.24147
Umut Şükrü Yaşar, Haydar Kaya
{"title":"EMI Shielding Properties of Al, Co, and Al/Co Thin Films","authors":"Umut Şükrü Yaşar,&nbsp;Haydar Kaya","doi":"10.1002/tee.24147","DOIUrl":"10.1002/tee.24147","url":null,"abstract":"<p>In this study, ultra-thin films of Al, Co, and multilayered Al/Co were fabricated using the magnetron sputtering technique on a very thin glass substrate. Subsequently, electromagnetic wave shielding measurements were conducted utilizing the transmission-reflection line method with the aid of a vector network analyzer. In measurements conducted within the X-band microwave frequency range within the waveguide, the maximum electromagnetic interference shielding effectiveness (EMI SE) values obtained were determined as 46 dB for Al, 24 dB for Co, and 48 dB for the multilayered Al/Co film. The structural and morphological analyses of these shielding films were included in the study using x-ray Diffraction (XRD), energy dispersive x-ray analysis (EDAX), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) techniques. Scattering parameter results indicated that increasing conductivity values enhance the shielding effectiveness (SE) while also demonstrating an additional positive impact on the SE value for multilayered structures. This finding indicates that nanometer-thick Al or Al/Co multilayer films could significantly protect electronic devices or individuals exposed to X-band microwave radiation. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1756-1762"},"PeriodicalIF":1.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
FDTD Simulation of a Small-Scale Charged Airplane Model in an Ambient Electric Field between Two Flat Electrodes 两平面电极间环境电场中的小尺度带电飞机模型的 FDTD 仿真
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-12 DOI: 10.1002/tee.24121
Shogo Okada, Yoshihiro Baba, Hiroyuki Tsubata
{"title":"FDTD Simulation of a Small-Scale Charged Airplane Model in an Ambient Electric Field between Two Flat Electrodes","authors":"Shogo Okada,&nbsp;Yoshihiro Baba,&nbsp;Hiroyuki Tsubata","doi":"10.1002/tee.24121","DOIUrl":"10.1002/tee.24121","url":null,"abstract":"<p>When an airplane flies in an electric field under a thundercloud, electric fields at the edges and projected portions of the airplane are enhanced and leaders emanate from there. When a positive leader emanating upward from the airplane connects with a downward negative leader from the bottom of an ordinary thundercloud and a negative leader emanating downward from the airplane connects with an upward positive leader from the ground, a large lightning current flows along the channel bridged between the thundercloud and the ground through the airplane. Recently, a method to reduce the risk of lightning strikes to airplanes has been proposed. It controls the charge on the surface of an airplane to suppress the electric field at edges and projected portions of the airplane. In this paper, an airplane under a thundercloud is represented with a vertical conducting bar or a horizontal conducting bar with a small projected portion, which is placed between impulse-high-voltage-applied two flat electrodes, and it is analyzed using the finite-difference time-domain (FDTD) method. Corona and leader discharges emanating from edges and projected portions of an airplane model are considered with their engineering representations: 40-μS/m and 0.02 S/m conducting regions for corona and leader discharges, respectively. The airplane model is not pre-charged or pre-charged negatively. It follows from the FDTD-computed results that pre-charging an airplane model with a relevant amount of negative charge can avoid discharges from and to the airplane model. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 10","pages":"1631-1639"},"PeriodicalIF":1.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Thin Film Magnetic Sensor for Magnetic Near-Field Measurement in Wireless Power Transfer System 用于无线电力传输系统磁近场测量的薄膜磁传感器
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-11 DOI: 10.1002/tee.24148
Loi Tonthat, Jerdvisanop Chakarothai, Ryota Suzuki, Katsumi Fujii, Shin Yabukami
{"title":"Thin Film Magnetic Sensor for Magnetic Near-Field Measurement in Wireless Power Transfer System","authors":"Loi Tonthat,&nbsp;Jerdvisanop Chakarothai,&nbsp;Ryota Suzuki,&nbsp;Katsumi Fujii,&nbsp;Shin Yabukami","doi":"10.1002/tee.24148","DOIUrl":"10.1002/tee.24148","url":null,"abstract":"<p>In this study, we employed a high-frequency-driven thin-film magnetic sensor to precisely measure the magnetic near field with enhanced spatial resolution, a challenge often faced by conventional loop antennas. Our study introduced an innovative approach utilizing this magnetic sensor to assess the magnetic near field in wireless power transfer systems, comparing its performance against that of a loop antenna. Our findings demonstrate that the magnetic sensor achieves its peak signal-to-noise ratio at a DC bias field of 4.7 Oe and carrier frequency of 0.5 GHz, boasting a detection limit for magnetic fields of ~0.4 A/m. Moreover, the magnetic field trend measured by the magnetic sensor closely aligns with simulation results, exhibiting sharper changes around the center compared to the loop antenna. These results highlight the superior sensitivity and spatial resolution of the magnetic sensor over conventional loop antennas. By enhancing the reliability of electronic systems across diverse applications, these sensors pave the way for advanced EMI/EMC evaluation techniques. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1763-1769"},"PeriodicalIF":1.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Boost DC-DC Converter with Non-dissipative Snubber 带非耗散缓冲器的升压型 DC-DC 转换器
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-11 DOI: 10.1002/tee.24140
Yeu-Torng Yau
{"title":"Boost DC-DC Converter with Non-dissipative Snubber","authors":"Yeu-Torng Yau","doi":"10.1002/tee.24140","DOIUrl":"10.1002/tee.24140","url":null,"abstract":"<p>To provide a hold-up time function in DC-DC supplies for cell site stations or data centers, using a boost converter with a bulk output capacitor as a front-end converter stage is a simple and highly cost-effective solution. However, conventional boost converters with a hard-switching operation result in low conversion efficiency and increased electromagnetic interference emissions. In this paper, a boost converter with a new non-dissipative snubber is proposed that only requires two additional diodes, an inductor, and a multilayer ceramic capacitor. The main feature of the proposed snubber is that the components are not located on the main power processing path. This means they only require low ratings, improving cost-effectiveness. A prototype converter is analyzed, realized, and applied to a 300 W redundant DC-DC power supply module for a 5G cell base station. © 2024 The Author(s). <i>IEEJ Transactions on Electrical and Electronic Engineering</i> published by Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1858-1878"},"PeriodicalIF":1.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/tee.24140","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141358102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Comprehensive Investigation of Winding Mechanical Properties in Generators under RISC: Impact of Position, Degree, and Eccentricity RISC 下发电机绕组机械特性的综合研究:位置、度数和偏心率的影响
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-10 DOI: 10.1002/tee.24143
Ming-Xing Xu, Yu-Ling He, Wen Zhang, De-Rui Dai, Zi-Xiang Fu, Yu-Song Zhang, David Gerada
{"title":"Comprehensive Investigation of Winding Mechanical Properties in Generators under RISC: Impact of Position, Degree, and Eccentricity","authors":"Ming-Xing Xu,&nbsp;Yu-Ling He,&nbsp;Wen Zhang,&nbsp;De-Rui Dai,&nbsp;Zi-Xiang Fu,&nbsp;Yu-Song Zhang,&nbsp;David Gerada","doi":"10.1002/tee.24143","DOIUrl":"10.1002/tee.24143","url":null,"abstract":"<p>This paper provides an in-depth study of the winding mechanical properties in generators under rotor interturn short circuit (RISC) cases. Unlike previous studies, this research investigates not only the influence of RISC degrees, but also the RISC positions and the eccentricity on the winding mechanical properties. The electromagnetic force (EF) formulas as well as the electromagnetic-structure coupling model are first proposed to derive the mechanical winding response characteristics, such as the vibration, deformation, the strain, and the stress. Subsequently, both finite element analysis (FEA) and experimental investigations are conducted to validate the theoretical findings. The results reveal that RISC introduces additional harmonics to the EF. Furthermore, as the eccentricity/RISC degree or the distance between the short circuit position and the <i>N</i>-pole increases, the end winding vibrations become more pronounced. When comparing single eccentricity and RISC faults to cases where both faults occur simultaneously, it is observed that the combined faults have a more detrimental impact on the end winding mechanical properties. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1842-1857"},"PeriodicalIF":1.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Spin-Thermoelectric Generation Associated with Magnetization Dynamics in the Insulator-Based Generators Fabricated from Liquid Phase Epitaxial Yttrium Iron Garnet, Bi-Substituted YIG and Bi- and Al-Substituted YIG Films 利用液相外延钇铁石榴石、双取代钇铁石榴石以及双和铝取代钇铁石榴石薄膜制造的绝缘体基发电机中与磁化动力学相关的自旋热电发电现象
IF 1 4区 工程技术
IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2024-06-09 DOI: 10.1002/tee.24137
Masaaki Imamura, Hironori Asada, Ryota Matsuda, Daisuke Tashima, Jiro Kitagawa
{"title":"Spin-Thermoelectric Generation Associated with Magnetization Dynamics in the Insulator-Based Generators Fabricated from Liquid Phase Epitaxial Yttrium Iron Garnet, Bi-Substituted YIG and Bi- and Al-Substituted YIG Films","authors":"Masaaki Imamura,&nbsp;Hironori Asada,&nbsp;Ryota Matsuda,&nbsp;Daisuke Tashima,&nbsp;Jiro Kitagawa","doi":"10.1002/tee.24137","DOIUrl":"10.1002/tee.24137","url":null,"abstract":"&lt;p&gt;An insulator-based spin-thermoelectric (STE) generator is composed of a thin paramagnetic metal (PM: Pt) layer for generating the STE voltage &lt;i&gt;V&lt;/i&gt;&lt;sub&gt;STE&lt;/sub&gt; via the inverse spin Hall effect and a ferrimagnetic insulator (FMI) film or slab used for producing spin-wave spin currents due to a temperature gradient &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;∇&lt;/mo&gt;\u0000 &lt;mi&gt;T&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ nabla T $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;. Yttrium iron garnet (YIG) is a key material used for the FMI of STE generators. We examined in detail the ferromagnetic resonance (FMR) properties of YIG (Y&lt;sub&gt;3&lt;/sub&gt;Fe&lt;sub&gt;5&lt;/sub&gt;O&lt;sub&gt;12&lt;/sub&gt;), Bi-substituted YIG (Y&lt;sub&gt;3-&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Bi&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Fe&lt;sub&gt;5&lt;/sub&gt;O&lt;sub&gt;12&lt;/sub&gt;) and Bi- and Al-substituted YIG (Y&lt;sub&gt;3-&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Bi&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Fe&lt;sub&gt;5-y&lt;/sub&gt;Al&lt;sub&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sub&gt;O&lt;sub&gt;12&lt;/sub&gt;) films grown by liquid phase epitaxy (LPE). Bi-substituted YIG films exhibited the large FMR damping and high STE voltage when the films were incorporated in the STE generator. The LPE-grown Y&lt;sub&gt;2.35&lt;/sub&gt;Bi&lt;sub&gt;0.65&lt;/sub&gt;Fe&lt;sub&gt;5&lt;/sub&gt;O&lt;sub&gt;12&lt;/sub&gt; film exhibited the FMR linewidth Δ&lt;i&gt;H&lt;/i&gt; of 30 mT and the &lt;i&gt;V&lt;/i&gt;&lt;sub&gt;STE&lt;/sub&gt; of 70 μV for the ∇&lt;i&gt;T&lt;/i&gt; of &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;90&lt;/mn&gt;\u0000 &lt;mo&gt;×&lt;/mo&gt;\u0000 &lt;msup&gt;\u0000 &lt;mn&gt;10&lt;/mn&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;−&lt;/mo&gt;\u0000 &lt;mn&gt;3&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msup&gt;\u0000 &lt;mo&gt;°&lt;/mo&gt;\u0000 &lt;mi&gt;C&lt;/mi&gt;\u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 &lt;mi&gt;μm&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ 90times {10}^{-3{}^{circ}}C/upmu mathrm{m} $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;. This paper comprehensively presents the origin of the STE generation in the insulator-based generators on the basis of the results of FMR and STE measurements. To clarify the origin of STE generation in the generators fabricated from single crystal YIG (YIG, Bi-substituted YIG and Bi- and Al-substituted YIG) films grown by LPE, three principal factors are explained: (a) thermal energy transfer from the phonon system to the spin system, which strengthens the heat excitation of spin precession, through the spin–orbit coupling enhanced by the growth-induced magnetic anisotropy of LPE-grown YIG films, (b) in the YIG films incorporated in the STE generators, the generation of spin-wave spin currents owing its origin to the ferromagnetic spin exchange interaction acting between neighboring spins due to &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;∇&lt;/mo&gt;\u0000 &lt;mi&gt;T&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ nabla T $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;, and (c) how the sp","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 11","pages":"1770-1780"},"PeriodicalIF":1.0,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141367907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信