{"title":"IEEE Magnetics Society Information","authors":"","doi":"10.1109/TMAG.2024.3498612","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3498612","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 12","pages":"C2-C2"},"PeriodicalIF":2.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10767880","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757822","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}
{"title":"IEEE Magnetics Society Information","authors":"","doi":"10.1109/TMAG.2024.3498615","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3498615","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"60 12","pages":"C2-C2"},"PeriodicalIF":2.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10767879","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142713955","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}
{"title":"Enhanced Multidimensional Signal Processing Schemes for High Areal Density Heated-Dot Magnetic Recording","authors":"Hidetoshi Saito;Fumiko Akagi","doi":"10.1109/TMAG.2024.3505272","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3505272","url":null,"abstract":"In this research, we propose a multidimensional signal processing scheme for a heated-dot magnetic recording (HDMR) system with double-layered bit-patterned media (BPM). The proposed signal processing scheme corresponds to an enhanced scheme compared to the previous scheme. That is to say, this advanced HDMR system with the proposed multidimensional signal processing scheme for three-track recording in each layer enabling an extension from the previous HDMR system with the conventional multidimensional signal processing scheme for two-track recording in each layer leads to further increase in the total data transmission rate. In this multidimensional signal processing scheme, the adopted signal detection schemes detect data sequences recorded on three tracks in each layer from the top layer to the bottom layer. We use a multilevel detector to detect each data sequence sequentially recorded on three respective tracks in the top layer and the other multilevel detector to detect data sequences simultaneously recorded on three tracks in the bottom layer. Therefore, the total data transmission rate of the advanced HDMR system with double-layered BPM can be increased about six times that of the HDMR system with single-layered BPM in principle.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 4","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706722","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}
{"title":"Measurement of Anisotropy and Magnetoelastic Constants of Thin Crystalline Films by Angle- and Strain-Dependent Ferromagnetic Resonance Spectroscopy","authors":"Khalid Masood;Albrecht Jander;Pallavi Dhagat","doi":"10.1109/TMAG.2024.3505675","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3505675","url":null,"abstract":"Anisotropy and magnetoelastic constants of a magnetostrictive film can be determined by measuring the ferromagnetic resonance (FMR) in the film as a function of applied magnetic field and strain. In previously reported such measurements, only the \u0000<inline-formula> <tex-math>$B_{1}$ </tex-math></inline-formula>\u0000 magnetoelastic constants were determined. We adapt the technique to also measure \u0000<inline-formula> <tex-math>$B_{2}$ </tex-math></inline-formula>\u0000 (or shear-dependent) magnetoelastic constants by designing instrumentation to apply a uniform bending moment to the sample along different crystalline axes to obtain both tensile and shear strains in the film. Knowledge of magnetoelastic constants is indispensable to enabling multiferroic and magnetoacoustic devices. \u0000<inline-formula> <tex-math>$B_{2}$ </tex-math></inline-formula>\u0000, in particular, is relevant to magnetoacoustic devices where significant shear strain can be induced by the acoustic waves. Using the technique described herein, we determine the anisotropy and magnetoelastic constants for epitaxial NiZnAl-ferrite films of application interest due to their high magnetostriction and low magnetic damping. The \u0000<inline-formula> <tex-math>$B_{1}$ </tex-math></inline-formula>\u0000 constant is found comparable to values published elsewhere while \u0000<inline-formula> <tex-math>$B_{2}$ </tex-math></inline-formula>\u0000 is determined for the first time.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912494","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}
Hyun-Mo Ahn;Jun-Kyu Park;Hyun-Jae Jang;Yeon-Ho Oh;Sung-Chin Hahn;Ki-Dong Song
{"title":"An Efficient Hybrid DC Circuit Breaker With Mechanical and Power Electronics Based on Current Commutation","authors":"Hyun-Mo Ahn;Jun-Kyu Park;Hyun-Jae Jang;Yeon-Ho Oh;Sung-Chin Hahn;Ki-Dong Song","doi":"10.1109/TMAG.2024.3506275","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3506275","url":null,"abstract":"The conventional mechanical and power electronic (MPE) hybrid dc circuit breakers (DCCBs) face challenges in balancing efficiency and performance. This study proposes an efficient MPE hybrid DCCB to address these limitations. The proposed topology reduces ON-state losses to a negligible magnitude utilizing only mechanical switches, such as the residual current switch (RCS), mechanical fast switch (MFS), and monostable mechanical switch in the main branch. Additionally, it reduces the number of semiconductor devices by employing a series connection between the MFS and the main current breaker (MCB). The dc interruption capability of the proposed MPE hybrid DCCB topology was verified through simulations based on an equivalent electric circuit, while its medium-voltage (MV)-class performance was confirmed through dc interruption tests. The proposed MPE hybrid DCCB offers an effective solution for improving the performance and reliability of dc power systems.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106992","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}