By Topic

IEEE Transactions on Magnetics

Issue 12 • Date Dec. 2005

Filter Results

Displaying Results 1 - 19 of 19
  • [Front cover]

    Publication Year: 2005, Page(s): c1
    Request permission for commercial reuse | PDF file iconPDF (112 KB)
    Freely Available from IEEE
  • IEEE Transactions on Magnetics publication information

    Publication Year: 2005, Page(s): c2
    Request permission for commercial reuse | PDF file iconPDF (43 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2005, Page(s): 4373
    Request permission for commercial reuse | PDF file iconPDF (47 KB)
    Freely Available from IEEE
  • First principles calculations of FePt, CoPt, Co3Pt, and Fe3Pt alloys

    Publication Year: 2005, Page(s):4374 - 4379
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    First principles calculations based upon density functional theory have been used to investigate the magnetic properties of various Fe-Pt and Co-Pt alloys. At the 50:50 composition, the technologically important L10 alloys CoPt and FePt show large magnetocrystalline anisotropies consistent with the natural layering of the crystal structure. Calculated values for the magnetocrystalline a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electroplated hard magnetic material and its application in microelectromechanical systems

    Publication Year: 2005, Page(s):4380 - 4383
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB) | HTML iconHTML

    We describe the preparation of CoNiMnP-based permanent-magnet material using several sulfate and chloride solutions. We studied eight samples, and all the samples show vertical magnetic anisotropy. Sample8, which was electroplated from a low-concentration chloride solution and under external magnetic field, demonstrates the best magnetic properties with coercivity 2632 Oe, remanence 0.20 T, and ma... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetic properties of biosynthesized magnetite nanoparticles

    Publication Year: 2005, Page(s):4384 - 4389
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    Magnetic nanoparticles, which are unique because of both structural and functional elements, have various novel applications. The popularity and practicality of nanoparticle materials create a need for a synthesis method that produces quality particles in sizable quantities. This paper describes such a method, one that uses bacterial synthesis to create nanoparticles of magnetite. The thermophilic... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetization reversal simulation of diamond-shaped NiFe nanofilm elements

    Publication Year: 2005, Page(s):4390 - 4393
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    We have studied magnetization reversal behaviors of diamond-shaped NiFe nanofilm elements with different length-to-width ratios (LWRs) between long and short diagonals by micromagnetic simulation. The results show that the reversal process of the diamond-shaped element strongly depends on the LWR. If the LWR is smaller than 2, the reversal starts at the element edge, but it starts from the center ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Low-noise magnetic force microscopy with high resolution by tip cooling

    Publication Year: 2005, Page(s):4394 - 4396
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB) | HTML iconHTML

    Low-noise magnetic force microscopy (MFM) was realized by using a conventional high-vacuum MFM with homemade tip-cooling equipment. The noise level of the MFM at a tip temperature of 130 K was estimated at μN/m order. High spatial resolution of 10 nm was obtained for observing high-density recording media with recording density of 1000 kfci. The improvement of resolution by tip cooling was a re... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fabrication of ultralow-profile micromachined inductor with magnetic core material

    Publication Year: 2005, Page(s):4397 - 4400
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    We have fabricated a microinductor with an ultralow profile by a microelectromechanical systems (MEMS) technique. The fabrication process uses UV-LIGA, dry etching, fine polishing, and electroplating to achieve high performance. The dimensions of the inductor are 1500 μm×900 μm×100 μm. It has 41 turns, with coil width of 20 μm, space of 20 μm, and a high aspect ratio of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive wavelet neural network control for linear synchronous motor servo drive

    Publication Year: 2005, Page(s):4401 - 4412
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB) | HTML iconHTML

    We propose an adaptive wavelet neural network (AWNN) control system to control the position of the mover of a permanent-magnet linear synchronous motor (PMLSM) servo drive system to track periodic reference trajectories. The AWNN control system, uses a wavelet neural network (WNN) with accurate approximation capability to represent the unknown dynamics of the PMLSM. It also uses a robust term to c... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A novel switched reluctance motor with C-core stators

    Publication Year: 2005, Page(s):4413 - 4420
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB) | HTML iconHTML

    This paper presents a novel switched reluctance motor (SRM) design in which the stator is simply formed from C-cores. Unlike conventional SRMs, the windings of the new motor can be individually wound into the stator cores without complex winding equipment. Because of the inherent axial field distribution, this type of SRM requires a three-dimensional (3-D) finite-element analysis (FEA) model for d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Determination of tooth cogging force in a hard-disk brushless DC motor

    Publication Year: 2005, Page(s):4421 - 4426
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    The paper proposes a new method to determine the tooth cogging force in a brushless DC (BLDC) motor which is used in a hard-disk application. This force might be a source of tooth vibrations and motor noise. In the new method, the permanent-magnet (PM) poles are substituted with their equivalent currents. Then, the conformal mapping (CM) method is applied to determine the PM magnetic field. Finall... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Noise predictive belief propagation

    Publication Year: 2005, Page(s):4427 - 4434
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    We introduce iterative noise whitening for belief-propagation-based channel detectors over intersymbol interference channels with correlated additive noise. In particular, we consider longitudinal magnetic recording systems. The proposed "noise predictive belief propagation" (NPBP) detector iteratively whitens the noise samples by modifying the edge probability computation. NPBP detectors based on... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improvements in SOVA-based decoding for turbo-coded storage channels

    Publication Year: 2005, Page(s):4435 - 4442
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    In this paper, we propose a novel and simple approach for dealing with the exaggerated extrinsic information produced by the soft-output Viterbi algorithm (SOVA). We first identify the reason behind these exaggerated values and then propose a simple remedy for it. We argue that what leads to this optimistic extrinsic information is the inherent strong correlation between the intrinsic information ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Self-heating in thin-film magnetic recording heads due to write currents

    Publication Year: 2005, Page(s):4443 - 4448
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB) | HTML iconHTML

    Self-heating due to write currents is a critical concern in thin-film magnetic recording heads; the reliability of the head-media interface and magnetoresistive sensors can be degraded by excessive temperature rise during writing operations. A combined experimental and theoretical study shows that the magnetic saturation of yoke structures and the heat transfer across the air bearing strongly infl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of pole-tip size on perpendicular recording head remanence

    Publication Year: 2005, Page(s):4449 - 4453
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB) | HTML iconHTML

    To aid understanding the physical mechanisms responsible for the perpendicular write head remanent field and thereby improve the write head design, we studied the remanence of single-pole perpendicular recording heads with trailing shield by using a contact scanning recording tester. We used two different pole-tip size heads in the study. We found that the remanence areas of the heads tested usual... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Voltage pulsing for localized clearance measurement

    Publication Year: 2005, Page(s):4454 - 4456
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB) | HTML iconHTML

    Mechanical clearance is a critical parameter of the head/disk interface (HDI) for sliders flying in close proximity in hard disk drives. It depends on a variety of HDI parameters, such as the air-bearing design, disk roughness, and the disk lubricant. An experimental setup was developed to determine the mechanical clearance locally at any location on the disk. Voltage pulsing is used to add an add... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2005 Index

    Publication Year: 2005, Page(s):4457 - 4584
    Request permission for commercial reuse | PDF file iconPDF (1608 KB)
    Freely Available from IEEE
  • IEEE Magnetics Society Information

    Publication Year: 2005, Page(s): c3
    Request permission for commercial reuse | PDF file iconPDF (32 KB)
    Freely Available from IEEE

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.

Full Aims & Scope

Meet Our Editors

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