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IEEE Transactions on Magnetics

Issue 4 • Date July 1986

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Displaying Results 1 - 12 of 12
  • [Front cover and table of contents]

    Publication Year: 1986, Page(s): 0
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    Freely Available from IEEE
  • Magnetic bubble logic component library

    Publication Year: 1986, Page(s):217 - 238
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3024 KB)

    A comprehensive library of magnetic bubble logic components has been established, with emphasis on standardization in terms of dimensions and I/O to facilitate VLSI chip composition. These components were designed in a current-access perforated-sheet configuration and fabricated on magnetic garnet wafers supporting 2-µm bubbles. The operating margin for each component was studied individually... View full abstract»

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  • Ion-implanted and permalloy hybrid magnetic bubble memory devices

    Publication Year: 1986, Page(s):239 - 246
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    Hybrid bubble memory devices have been proposed and operated with the memory density of 4 Mbit/cm2. In the hybrid bubble memory devices, minor loops are composed of ion-implanted tracks with 4-µm period, and major lines and functional parts including block-replicate and swap gates are composed of Permalloy tracks with a longer period of 12 µm. Passive junctions between ion-imp... View full abstract»

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  • DC modulation noise in thin metallic media and its application for head efficiency measurements

    Publication Year: 1986, Page(s):247 - 252
    Cited by:  Papers (21)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    A model for one type of modulation noise in thin-film metallic disks is presented based on experimental noise power spectra. It is observed that fluctuations in head-to-disk spacing produce noise proportional to the slope of the hysteresis curve. Experiments on a disk with distinctive surface texture illustrate that spacing variations due to surface texture may indeed be the dominant mechanism in ... View full abstract»

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  • Performance analysis of partial response systems for nonreturn-to-zero recording

    Publication Year: 1986, Page(s):253 - 258
    Cited by:  Papers (11)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    An analysis is presented of the performance of partial response (PR) systems of types PR(1, 0, 0, . . . , 0, -1) and PR(1, 0, 0, . . . , 0, 1) for nonreturn-to-zero recording. The error probability is obtained as a function of the signal-to-noise ratio (SNR) at the reading point, the phase margin, the linear density, and the roll-off factor of a Nyquist equalizing waveform. Then as a numerical exa... View full abstract»

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  • Analytical investigation of eddy currents in nonlinear ferromagnetic media for weak magnetic fields

    Publication Year: 1986, Page(s):259 - 271
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB)

    Electromagnetic field diffusion into a nonlinear ferromagnetic conducting half-space is analytically investigated for weak magnetic fields. For these fields a "nth power" approximation for magnetization curves is used. The exact analytical solutions to the non-linear partial differential equations of electromagnetic field theory are found for circular polarization of incident waves. The case of no... View full abstract»

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  • Domain models of eddy current loss due to normal magnetization in slightly misoriented

    Publication Year: 1986, Page(s):272 - 281
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB)

    In Goss-oriented SiFe laminations, regions exist with a significant normal magnetization component arising from dip misorientation of the crystallites. It has recently been suggested by Imamura and co-workers that this normal magnetization can make a major contribution P_{\perp } to the eddy current losses incurred during cyclic magnetization along the textur... View full abstract»

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  • An eddy-current model for three-dimensional inversion

    Publication Year: 1986, Page(s):282 - 291
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    A model is presented for the inversion of eddy-current data to be used for the detection of flaws. This model is based on rigorous electromagnetic theory and uses a multifrequency approach to make it truly three-dimensional. The resulting integral equations are discretized and solved using least squares techniques. The numerical problems involved in this algorithm are discussed, and a solution as ... View full abstract»

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  • The use of null field integral equations in magnetic-field problems

    Publication Year: 1986, Page(s):292 - 298
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The objective of this paper is to discuss the use of the null field integral equations in the solution of eddy current magnetic field problems. Their usage is approached through a development of the "classical" boundary integral equation technique as applied to irregularly shaped two-dimensional objects. Two immediate advantages are discussed, the first being the circumvention of singularities in ... View full abstract»

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  • A fluxgate magnetometer with a metallic glass core

    Publication Year: 1986, Page(s):299 - 300
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    A square-wave excited pulse-height fluxgate circuit is described, using a metallic glass core fluxgate and a minimum amount of active components. High reliability and linearity have been achieved. View full abstract»

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  • Propagation of reversible magnetization changes along ferromagnetic amorphous ribbons

    Publication Year: 1986, Page(s):301 - 305
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Local reversible magnetization changes are produced in a region of a long ferromagnetic amorphous ribbon, and their amplitude decay versus the distance from this region is measured. The amplitude decay is analyzed as a function of the reversible permeability on as-cast and annealed ribbons of various widths and thickness at different points of the hysteresis loop. The results are discussed on the ... View full abstract»

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  • [Back cover]

    Publication Year: 1986, Page(s): 0
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    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.

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Meet Our Editors

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