# IEEE Transactions on Magnetics

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Displaying Results 1 - 25 of 29
• ### Front cover

Publication Year: 2014, Article Sequence Number: 0002901
| PDF (287 KB)
• ### IEEE Transactions on Magnetics publication information

Publication Year: 2014, Article Sequence Number: 0003001
| PDF (197 KB)

Publication Year: 2014, Article Sequence Number: 0100802
| PDF (220 KB)
• ### Programmable Self-Assembly, Disassembly, Transport, and Reconstruction of Ordered Planar Magnetic Micro-Constructs

Publication Year: 2014, Article Sequence Number: 2301406
Cited by:  Papers (2)
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We present a method to seamlessly self-assemble, disassemble, transport, and reconstruct ordered 2-D structures of fluid-borne microspheres on a surface using an array of magnetic zigzag wire traps. Competition between and control over: 1) the trapping forces of underlying magnetic patterns; 2) magnetic dipole repulsion; and 3) Brownian motion gives rise to reproducible cluster structures. Weak ex... View full abstract»

• ### Defect-Induced Room-Temperature Ferromagnetism in ${rm SnO}_{2}$ Nanowires Controlled by UV Light Irradiation

Publication Year: 2014, Article Sequence Number: 2400206
Cited by:  Papers (2)
| | PDF (749 KB) | HTML

Nonferromagnetic SnO2 nanowires show ferromagnetism at room temperature, which is significantly enhanced upon irradiation by ultraviolet (UV) light of wavelength 365 nm. The structural characterizations on as-grown, UV-irradiated, and O2-annealed samples show no measurable difference in X-ray diffraction profiles and field-emission scanning and transmission electron microscop... View full abstract»

• ### Magnetic Properties of Hot-Pressed ${rm FeSb}_{{2}}$

Publication Year: 2014, Article Sequence Number: 2400304
Cited by:  Papers (1)
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We report on the magnetic properties of a hot-pressed FeSb2 sample. We find a significant increase in the magnetic susceptibility in our sample when compared with the values previously reported for the polycrystalline sample. The pronounced Curie tail at low temperature corresponds to 0.2% of Fe2+ impurities per mole. In the intrinsic conductivity region, the susceptibility d... View full abstract»

• ### Efficient Disk Drive Performance Model for Realistic Workloads

Publication Year: 2014, Article Sequence Number: 3000409
Cited by:  Papers (2)
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Accurate models for hard disk drive performance are needed to ensure that computer systems, both large and small, can meet the performance requirements for their intended application. There are a few tools available for predicting disk drive performance when one only has access to the published drive specifications, which is often the case when there is a need to select a drive from multiple candi... View full abstract»

• ### Noise Characterization of Perpendicular Recording Media by Cluster Size Measurements

Publication Year: 2014, Article Sequence Number: 3201606
Cited by:  Papers (7)
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New methodology to obtain reliable correlation between magnetic cluster details measured using magnetic force microscopy (MFM) and noise in perpendicular recording media is reported. In addition to the ac demagnetized state, which is often studied by several researchers, magnetic clusters were examined at two other magnetic states of the recording medium to obtain details on thermally unstable and... View full abstract»

• ### Stochastic Evaluation of Magnetic Head Wears in Hard Disk Drives

Publication Year: 2014, Article Sequence Number: 3301507
Cited by:  Papers (7)
| | PDF (757 KB) | HTML

Head wear becomes inevitable as the physical clearance between the head and disk in current hard disk drives is close to 1 nm or lower. Accurate characterization of the wear process is essential in understanding the wear mechanism, evaluating the reliability of hard disk drives (HDDs), and predicting the future evolution of wear as well as guiding the design of HDDs of later vintages. Due to the v... View full abstract»

• ### A Broadband Radar Absorber Based on Perforated Magnetic Polymer Composites Embedded With FSS

Publication Year: 2014, Article Sequence Number: 4004305
Cited by:  Papers (5)
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This paper presents a design method of broadband radar absorber (RA) combining together the features of frequency selective surfaces (FSSs), subwavelength hole array, and magnetic absorbing sheets. The absorber is constructed of a periodic array of square conducting patches embedded into a magnetic absorbing substrate perforated with circular hole arrays and backed by a metal ground. The absorptio... View full abstract»

• ### Microwave-Induced DC Response of Spin Wave Resonance Driven by an Anisotropic Built-In Field in a Permalloy Thin Strip

Publication Year: 2014, Article Sequence Number: 4200204
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The microwave-induced dc response has been investigated in an in-plane magnetized permalloy strip. The spin wave resonances (SWRs) are observed. The SWR signals get anomalously suppressed when the direction of the specimen or the amplitude of the microwave frequencies is changed. Such suppression occurs at frequencies of less than 11 GHz, while the resonant field is as weak as less than 200 Oe. Th... View full abstract»

• ### Dual Functionality of a Simple Magnetic/Semiconductor Heterostructure Device: Diode and Magnetoresistive Element

Publication Year: 2014, Article Sequence Number: 4400108
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Thin layers of cobalt-polyacrylic acid (Co-PAA) composite with varying weight percentage (wt%) of cobalt in the PAA solution, were prepared by spin-coating on p -Si(001) substrate. The films show large positive magnetoresistance (MR) at low temperature, on application of in-plane and out-of-plane magnetic field. Studies on the transport characteristics of composite/Si(001) heterojunction devices s... View full abstract»

• ### Simulation and Experimental Measurement of Magnetic Fluid Transmission Characteristics Subjected to the Magnetic Field

Publication Year: 2014, Article Sequence Number: 4600107
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Microstructure of magnetic fluid under the applied external magnetic field was simulated by the Monte Carlo method, which could be used to research the transmission characteristics of the magnetic fluid film. Transmittance of a 10 μm magnetic fluid film at the 1550 nm wavelength was obtained by tracing the path of a single photon in the film, which could be explained by the phenomenon of mi... View full abstract»

• ### A Low-Noise Fundamental-Mode Orthogonal Fluxgate Magnetometer

Publication Year: 2014, Article Sequence Number: 6500103
Cited by:  Papers (2)
| | PDF (355 KB) | HTML

We introduce a low-noise fundamental-mode orthogonal fluxgate magnetometer for use in magnetotelluric surveys. The fluxgate makes use of rapidly quenched amorphous wire having vanishing value of saturation magnetostriction constant (λ ≈ 10-7) and displaying ultrasoft magnetic behavior. The design of the fluxgate consists of multiple U-shaped sensor heads where pairs of wir... View full abstract»

• ### A Seminumerical Finite-Element Postprocessing Torque Ripple Analysis Technique for Synchronous Electric Machines Utilizing the Air-Gap Maxwell Stress Tensor

Publication Year: 2014, Article Sequence Number: 7026909
Cited by:  Papers (10)
| | PDF (2007 KB) | HTML

A novel method to calculate the harmonic torque components in synchronous machines is presented. Harmonic torque components create a torque ripple, which is undesirable in many applications. This torque ripple is a major cause of acoustic noise and vibration and can limit the machine's application range. A seminumerical method is developed to calculate and analyze harmonic torque components based ... View full abstract»

• ### Development of Dynamic Magnetic Circuit Models Including Iron Saturation and Losses

Publication Year: 2014, Article Sequence Number: 7027010
Cited by:  Papers (6)
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There is a continuing need in power electronic circuits to model magnetic components. It is necessary to determine the interaction of the magnetic component with the rest of the power electronic system so that a dynamic circuit model of the magnetic component including material saturation and iron losses is required. In addition, the magnetic component model must be valid when the magnetic compone... View full abstract»

• ### Instantaneous Power Balance in Finite-Element Simulation of Electrical Machines

Publication Year: 2014, Article Sequence Number: 7200207
Cited by:  Papers (1)
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Conservation of power in time-stepping finite-element (FE) simulation of electrical machines is studied. We propose a method for accurately obtaining the instantaneous time derivative of the FE solution, from which the instantaneous eddy-current losses and the rate-of-change of the magnetic field energy are calculated. The method is shown to be consistent with different time-integration schemes, u... View full abstract»

• ### Two-Dimensional Magnetostatic Finite-Element Simulation for Devices With a Radial Symmetry

Publication Year: 2014, Article Sequence Number: 7400204
Cited by:  Papers (4)
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This paper proposes a 2-D magnetostatic finite-element solver for radially symmetric devices, complementary to the standard Cartesian and axisymmetric solvers, which are typically used for translatory and cylindrically symmetric configurations. In contrast to the Cartesian and axisymmetric cases, a specific difficulty is encountered due to the particular dependence of the magnetic vector potential... View full abstract»

• ### A 2-D-Based Analytical Method for Calculating Permanent Magnetic Ring Bearings With Arbitrary Magnetization and Its Application to Optimal Bearing Design

Publication Year: 2014, Article Sequence Number: 7400308
Cited by:  Papers (5)
| | PDF (2154 KB) | HTML

This paper investigates the optimal design of passive permanent magnetic bearings in terms of maximum stiffness per magnet volume ratio. Examining the influence of design parameters on maximum material utilization, we present general conclusions regarding cross section dimension, type of magnetization, and magnetic pole number. Furthermore, we provide generalized design plots for selected configur... View full abstract»

• ### A Fast Finite Element Model Taking Into Account 3-D Effects for the Optimal Design of Micro-Hybrid Starters

Publication Year: 2014, Article Sequence Number: 7400408
Cited by:  Papers (1)
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This paper presents a fast design method taking into account 3-D effects in a reinforced brushed dc motor used as starter in automotive application. Because of their low cost and simplicity, reinforced starters are used in micro-hybrid vehicles. The specific geometry of such devices induces an axial component of the flux which cannot be accounted for by 2-D models. 3-D finite element (FE) models a... View full abstract»

• ### Design and Optimization of a Radial Hybrid Magnetic Bearing With Separate Poles for Magnetically Suspended Inertially Stabilized Platform

Publication Year: 2014, Article Sequence Number: 8101011
Cited by:  Papers (10)
| | PDF (1485 KB) | HTML

To decrease the mass of the radial hybrid magnetic bearing (RHMB) when used in large journal diameter application, this paper researches the relationships of the structure parameters and presents an optimization method for an RHMB with separate poles. The designed RHMB is composed of four separate magnetic poles, with a secondary air gap constructed to help the control flux form its loop. Consider... View full abstract»

• ### A Novel Conical Active Magnetic Bearing With Claw Structure

Publication Year: 2014, Article Sequence Number: 8101108
Cited by:  Papers (2)
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Generally, both radial magnetic bearing stators and combination (radial and thrust) magnetic bearing stators are distributed in radial space. Besides, most magnetic bearings operate with additional thrust disk on the rotor. These magnetic bearing structures are not applicable in the case when radial dimension is limited due to their large radial construction sizes. A novel claw active magnetic bea... View full abstract»

• ### Reduction of Low Space Harmonics for the Fractional Slot Concentrated Windings Using a Novel Stator Design

Publication Year: 2014, Article Sequence Number: 8201012
Cited by:  Papers (25)
| | PDF (2399 KB) | HTML

Using magnetic flux barriers in the stator yoke of electric machines with fractional slots, tooth-concentrated winding, it is possible to reduce or even to cancel some space harmonics of low order in the air-gap flux density resulting in lower rotor losses induced by the armature reaction field. In this paper, this new technique is applied during the design and analysis of two permanent magnet mac... View full abstract»

• ### Performance Evaluation of a Low-Speed Single-Side HTS Linear Induction Motor Used for Subway System

Publication Year: 2014, Article Sequence Number: 8201109
| | PDF (3530 KB) | HTML

Due to the critical characteristics and the magnetic flux pinning phenomenon of the high-temperature superconducting (HTS) material, the electromagnetic calculation for the HTS motor is more complicated than for conventional motors. In this paper, the equivalent electrical conductivity and the equivalent magnetic permeability are proposed to represent the critical characteristics and the magnetic ... View full abstract»

• ### Analysis of Overhang Effect for a Surface-Mounted Permanent Magnet Machine Using a Lumped Magnetic Circuit Model

Publication Year: 2014, Article Sequence Number: 8201207
Cited by:  Papers (2)
| | PDF (4323 KB) | HTML

This paper presents a magnetic field analysis of a surface-mounted permanent magnet machine with an overhang structure wherein the rotor axial length exceeds that of the stator. A 2-D analytic method using a lumped magnetic circuit model (LMCM) is proposed for more rapid computation of the overhang effect compared with a conventional 3-D or quasi-3-D finite element analysis (FEA). In the LMCM, the... View full abstract»

## Aims & Scope

IEEE Transactions on Magnetics publishes research in science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage.

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## Meet Our Editors

Editor-in-Chief
Pavel Kabos
National Institute of Standards and Technology