2015 IEEE Magnetics Conference (INTERMAG)最新文献_第9页

Performance improvement of an automotive alternator by heat treatment 热处理改善汽车交流发电机的性能

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7156830

J. Kim, J. Hong, J. Lee, S. Park

引用次数: 1

Ferromagnetic resonance study of Si/NiO/NiFe films with different orientations of NiO buffer layers 不同NiO缓冲层取向的Si/NiO/NiFe薄膜的铁磁共振研究

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7156975

K. Sun, Y. Yang, Y. Liu, Z. Yu, Y. Zeng, W. Tong, X. Jiang, Z. Lan, R. Guo, C. Wu

{"title":"Ferromagnetic resonance study of Si/NiO/NiFe films with different orientations of NiO buffer layers","authors":"K. Sun, Y. Yang, Y. Liu, Z. Yu, Y. Zeng, W. Tong, X. Jiang, Z. Lan, R. Guo, C. Wu","doi":"10.1109/INTMAG.2015.7156975","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156975","url":null,"abstract":"Magnetic thin films have been found wide use in a large scale of microwave devices that include circulators, filters, and phase shifters [1, 2]. The operating frequencies of these devices are determined essentially by the ferromagnetic resonance (FMR) frequencies of the films. Recently, many efforts are made on the FMR study for the metallic magnetic films, such as NiFe/NiO [3], NiFe/ FeMn [4, 5] CoNi/FeMn [6], NiFe/CoO [7] and IrMn/Fe/IrMn [8] films. However, there are few reports on the effects of antiferromagnetic (AF) film with different orientations on the FMR effect. This presentation will demonstrate the influence of different orientations of NiO buffer layers on the ferromagnetic resonance (FMR) effect of Si/NiO/NiFe films. It is important to emphasize that this work differs from previous work on the FMR study of NiFe films. Previous work was only just performed on single layer NiFe film or antiferromagnetic/NiFe films, where the antiferromagnetic films didn't refer to the orientation. However, compared with the previous work, the NiO antiferro-magnetic films have different orientations in this work. It is that the different orientations of NiO buffer layers lead to diverse FMR effects.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121480650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Ni content on the crystallization, soft magnetic properties and GMI effect in amorphous Co68Fe7−xNixSi15B10 (x = 0, 1.5, 3, 4.5) ribbons Ni含量对Co68Fe7−xNixSi15B10 (x = 0,1.5, 3,4.5)非晶带结晶、软磁性能和GMI效应的影响

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7157160

W. Lu, Y. Xu, X. Fang, Y. Song, X. Li

{"title":"Effect of Ni content on the crystallization, soft magnetic properties and GMI effect in amorphous Co68Fe7−xNixSi15B10 (x = 0, 1.5, 3, 4.5) ribbons","authors":"W. Lu, Y. Xu, X. Fang, Y. Song, X. Li","doi":"10.1109/INTMAG.2015.7157160","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157160","url":null,"abstract":"Soft ferromagnetic amorphous ribbons are widely used for a wide range of applications, including high-frequency transformers and magnetic sensors . The recent discovery of a so-called giant magnetoimpedance (GMI) effect in these alloys has made them very attractive candidates for making highly sensitive magnetic sensors. GMI effects have been reported in Co-based amorphous ribbons owing to the high transverse permeability, due to the presence of a transversely oriented domain configuration. Like Co-based amorphous wires, ribbons with CoFeSiB composition and nearly zero but negative magnetostriction, were found to show the largest GMI ratio among Co-based ribbons. The GMI ratio reached a value as high as 160% at a frequency of 1 MHz in the (Co1-xFex)70Si12B18 (x = 0 .057) amorphous ribbon with nearly zero magnetostriction . The research on GMI effect sensors is now focused on the material composition and structure of sensitive components. In this presentation, we attempt to improve the GMI ratio of amorphous Co68Fe7Si15B10 alloy ribbons by introducing Ni element .","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121670423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An observation of variable magnetic forces depending on adjacent surface shapes of bordering magnetized materials 对磁化材料相邻表面形状变化的磁力的观察

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7157736

H. Choi, I. Park, B. Park

引用次数: 1

Upper limits on achievable storage density using turbo equalization in two-dimensional magnetic recording 二维磁记录中使用涡轮均衡的可实现存储密度上限

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7157038

J. No, J. Moon

引用次数: 0

Zitterbewegung induced by spin and pseudospin precession in thin topological insulator film 拓扑绝缘体薄膜中自旋和伪自旋进动诱导的自激纠缠态

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7156776

C. Ho, M. Jalil

引用次数: 0

Tunable high coercivity FePt bilayer structure for HAMR application 用于HAMR应用的可调谐高矫顽力FePt双层结构

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7156682

T. Dutta, S. Kundu, M. Saifullah, H. Yang, C. S. Bhatia

引用次数: 0

Effect of TiN-MgO intermediate layer on the microstructure and magnetic properties of FePt thin films TiN-MgO中间层对FePt薄膜微观结构和磁性能的影响

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7156678

K. Dong, H. Li, J. Deng, Y. Peng, G. Ju, G. Chow, J. Chen

{"title":"Effect of TiN-MgO intermediate layer on the microstructure and magnetic properties of FePt thin films","authors":"K. Dong, H. Li, J. Deng, Y. Peng, G. Ju, G. Chow, J. Chen","doi":"10.1109/INTMAG.2015.7156678","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7156678","url":null,"abstract":"In order to achieve the application of FePt based films, great progresses have been made in the fabrication of granular FePt thin films using MgO or TiN underlayer/intermediate layers. However, the MgO intermediate layer possessing small surface energy led to large opening-up in the in-plane hysteresis loop while the TiN intermediate layer possessing large surface energy caused the formation of the semi-spherical FePt grains with big grain size and poor grain isolation. In order to solve these problems, we proposed a new intermediate layer- TiN-MgO. As compared with TiN intermediate layer, the TiN-MgO intermediate layer had smaller surface energy and larger interfacial energy, thus favoring Volmer-Weber type (island) growth of FePt. As seen from planar view TEM images (Fig.1a and b), by doping MgO into the TiN intermediate layer, the grain boundaries were more distinct. Moreover, grain size decreased from 8.77 nm to 7.58 nm for 50 vol.% MgO doping into TiN. The cross-sectional TEM images (Fig.1 c and d) indicated that FePt-SiNx-C films were grown on the top of TiN-MgO polycrystalline intermediate layer with a single-layer structure and FePt grains were well isolated. Furthermore, the grain shape of FePt became more uniform with doping MgO into TiN intermediate layer. Although, the perpendicular anisotropy had a little deterioration which was due to the nonwetting of FePt grains on TiN-MgO intermediate layer (Fig.1 e), the 4nm-SiNx 40 vol.%-C 20 vol.% film grown on TiN/TiN-MgO 50 vol.% with a larger out-of-plane coercivity of 21.7 kOe and a small in-plane coercivity of 3.5 kOe can still obtained (Fig.1g).","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126339646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis on variable SynRM according to geometric structure by numerical analysis and experimentation 通过数值分析和实验对几何结构变量SynRM进行了对比分析

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7157240

J. Lee, Y. Kim

引用次数: 0

Torque characteristics of dual stator permanent magnet vernier machine with different pole/slot combinations 双定子永磁游标机不同极槽组合的转矩特性

2015 IEEE Magnetics Conference (INTERMAG) Pub Date : 2015-05-11 DOI: 10.1109/INTMAG.2015.7157109

Y. Zhang, H. Lin, S. Fang, D. Wang, H. Yang

{"title":"Torque characteristics of dual stator permanent magnet vernier machine with different pole/slot combinations","authors":"Y. Zhang, H. Lin, S. Fang, D. Wang, H. Yang","doi":"10.1109/INTMAG.2015.7157109","DOIUrl":"https://doi.org/10.1109/INTMAG.2015.7157109","url":null,"abstract":"Traditional direct-drive permanent magnet synchronous machine (PMSM) suffers from large bulk and complex topology structure, which extremely limits its industrial applications. As a novel embranchment of PMSM, PM vernier machine (PMVM) incorporates the magnetic gear effects into conventional PMSM producing high torque at a relatively low speed, which is desirable for direct-drive applications. Recently, the specific magnetic field modulation effect and high output torque ability have been subtly incorporated into PMVM, which simultaneously enables the sinusoidal back-EMF waveform, high power density, efficient thermal dissipation. However, the torque characteristics of PMVMs with different pole-slot combinations and gear ratios have not been studied systemically as yet. In this paper, two representative dual stator PMVMs are designed to analyze the torque characteristics in detail with particular emphasis on the dominant influence of pole-slot combinations. In addition, gear ratio selecting is also investigated through the analysis of the electromagnetic characteristics of the designed PMVMs, which provides further unique insights into the design and optimization of PMVMs.","PeriodicalId":381832,"journal":{"name":"2015 IEEE Magnetics Conference (INTERMAG)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126513910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0