By Topic

IEEE Transactions on Magnetics

Issue 6 • Nov. 1998

Filter Results

Displaying Results 1 - 19 of 19
  • IEEE Transactions on Magnetics 1998 Subject Categories

    Publication Year: 1998, Page(s):3931 - 3932
    Request permission for commercial reuse | PDF file iconPDF (11 KB)
    Freely Available from IEEE
  • 1998 Index IEEE Transactions on Magnetics Vol. 34

    Publication Year: 1998, Page(s):1 - 33
    Request permission for commercial reuse | PDF file iconPDF (704 KB)
    Freely Available from IEEE
  • Subject index

    Publication Year: 1998, Page(s):33 - 103
    Request permission for commercial reuse | PDF file iconPDF (947 KB)
    Freely Available from IEEE
  • An evolutionary algorithm for the optimal design of induction motors

    Publication Year: 1998, Page(s):3882 - 3887
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    This paper describes the application of an evolutionary algorithm to the design of induction motors. It is shown that the use of an evolutionary algorithm offers advantages over other approaches. These include a high rate of global convergence and the ability to handle discrete variables View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency modulation in video tape recorders

    Publication Year: 1998, Page(s):3916 - 3921
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB)

    Essentially all consumer video tape recorders use frequency modulation for the luminance component of the video signal and demodulation is performed by zero-crossing detection. Distortion-free video requires that the zero crossings of the frequency modulation waveforms be preserved exactly. In this paper, the complete set of mathematical conditions for zero-crossing preservation is derived from fi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Calculation of no-load induction motor core losses using the rate-dependent Preisach model

    Publication Year: 1998, Page(s):3876 - 3881
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    In this paper the authors present a two-step algorithm for predicting the core losses in an electrical machine. As a first step, the flux patterns in the cross section of the machine are calculated by using a time stepped two-dimensional finite element (FE) model, neglecting hysteresis and eddy currents in the laminated core. The second step consists in enforcing the calculated tooth and yoke flux... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reducing hysteresis in magnetostrictive-piezoelectric magnetic sensors

    Publication Year: 1998, Page(s):3913 - 3915
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    In this paper, we present a method to avoid hysteresis in magnetostrictive-piezoelectric sensors. It is based on the application of an alternating magnetic field of a frequency different than the piezoelectric exciting frequency that supplies enough energy to overcome any domain wall pinning. The signal is filtered with a notch filter synchronized to the magnetic field frequency and thus it does n... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Temperature- and time-dependent Preisach model for a Stoner-Wohlfarth particle system

    Publication Year: 1998, Page(s):3867 - 3875
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    In this paper, a dynamic (time and temperature dependent) Preisach model is described. In the Preisach plane one uses a double well potential distribution calculated with the Stoner-Wohlfarth model. Both static and dynamic interactions for a ultrafine particulate system are taken into account in order to simulate various magnetization processes, such as: field-cooled (FC), zero field-cooled (ZFC),... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Determination of the capture radii of magnetite bearing hydroxide flocs in magnetic filtration

    Publication Year: 1998, Page(s):3902 - 3909
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Magnetic filtration may be applied in water technology for the separation of flocs which are formed in a flocculation tank together with magnetite as an additive. The capture radius is an important mathematical quantity to calculate the performance of such filters in advance. Thus, the capture radii of magnetite bearing copper hydroxide flocs were measured with a direct visual evaluation of the fl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intrinsic low-field loss in microwave ferrites

    Publication Year: 1998, Page(s):3830 - 3836
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    The off-resonance damping parameter due to the three-magnon splitting process is calculated by extending the theory of intrinsic magnetic relaxation processes. The imaginary part of the diagonal component of the microwave permeability tensor is found to decrease with increasing internal magnetic field and to be proportional to the absolute temperature. In magnitude it is somewhat smaller than the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Artificial neural networks for finite element modeling of giant magnetostrictive devices

    Publication Year: 1998, Page(s):3853 - 3856
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    The author investigates the contribution of artificial neural networks to the improvement of giant magnetostrictive devices nonlinear modeling. In fact, the use of experimental data through artificial neural networks modeling allows the introduction of the magnetostrictive coupling. The proposed model has been tested on a basic magnetostrictive actuator View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hysteresis motor using magnetically anisotropic Fe-Cr-Co magnet

    Publication Year: 1998, Page(s):3888 - 3896
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    For the rotor ring of the hysteresis motor, semihard Alnico magnets have been almost applied until now. However, the hysteresis motor using Alnico magnets has several disadvantages. In order to improve the disadvantages of conventional hysteresis motors, the Fe-Cr-Co magnet steel with magnetic anisotropy is applied for hysteresis rotor ring. Magnetic anisotropy is used to cause large reluctance to... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive finite element mesh refinement techniques in three-dimensional micromagnetic modeling

    Publication Year: 1998, Page(s):3922 - 3930
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Two different methods to adaptively refine tetrahedral finite element meshes are presented. The influence of the mesh refinement on the obtained results of micromagnetic calculations is demonstrated for the case of magnetization patterns in soft magnetic platelets. The specific addition of vertices and finite elements in inhomogeneous regions is used to resolve the magnetic structure on small leng... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characterization of electrodeposited magnetic multilayers

    Publication Year: 1998, Page(s):3910 - 3912
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    Electrodeposition will prove to be a promising candidate for the preparation of magnetic nanostructures. Multilayered Co/Pt nanostructures grown on a Cu(111) single-crystal substrate by electrodeposition under potential control exhibit a remanent perpendicular magnetization and a large coercivity, which depend on the deposition overpotential and hence the multilayer growth mechanism. Giant magneto... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Spin-wave emitting diodes and spin diffusion in magnetic multilayers

    Publication Year: 1998, Page(s):3837 - 3841
    Cited by:  Papers (23)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    When a dc current traverses a magnetic multilayer, a spontaneous precession of the magnetization is predicted to arise. In the present work, we discuss three different configurations for this device. We show that the multilayer must not exhibit complete mirror symmetry with respect to the median plane of the precessing layer. Also, we solve the Valet-Fert spin-diffusion equations in the various la... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fast Preisach-based magnetization model and fast inverse hysteresis model

    Publication Year: 1998, Page(s):3857 - 3866
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Fast computational methods for Preisach-based models and their inverses are presented. The methods are based on a differential equation approach to computing a sequence of magnetization values due to a sequence of applied fields. The method used to speed up calculations can be applied to any Preisach model. The Della Torre, Oti, Kadar model was used here as an illustration. Sequential computations... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Three-dimensional analytic model of permanent magnet axial flux machine

    Publication Year: 1998, Page(s):3897 - 3901
    Cited by:  Papers (30)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    A three-dimensional (3-D) magnetic field problem in an axial flux machine with a toroidal winding is considered. The precise solutions generated by the integral transform and Fourier methods in elementary subregions are joined using the iterative Schwartz algorithm. The comparison between two dimensional and 3-D models is performed and a correction factor taking into account the radial variation o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analytical determination of eddy currents in a hollow sphere excited by an arbitrary dipole

    Publication Year: 1998, Page(s):3822 - 3829
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    In this paper an analytical solution for the quasistationary eddy current distribution in a hollow sphere is presented using a divergence free vector potential derived from another spatial vector function by applying the curl operator. The field is excited by a dipole of arbitrary orientation and position. The dissipated power is also considered and hints are given for the analytical treatment of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamical micromagnetics by the finite element method

    Publication Year: 1998, Page(s):3842 - 3852
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    We developed a new numerical procedure to study dynamical behavior in micromagnetic systems. This procedure solves the damped Gilbert equation for a continuous magnetic medium, including all interactions in standard micromagnetic theory in three-dimensional regions of arbitrary geometry and physical properties. The magnetization is linearly interpolated in each tetrahedral element in a finite elem... View full abstract»

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

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