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IEEE Transactions on Magnetics

Issue 4 • July 1977

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Displaying Results 1 - 11 of 11
  • [Front cover and table of contents]

    Publication Year: 1977, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (159 KB)
    Freely Available from IEEE
  • Side fringing fields and write and read crosstalk of narrow magnetic recording heads

    Publication Year: 1977, Page(s):1021 - 1028
    Cited by:  Papers (36)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    In magnetic recording systems the side fringing fields of magnetic recording heads are responsible for crosstalk from adjacent tracks and eventually for partial erasure of adjacent tracks, thereby limiting the attainable track density. In this paper we derive analytical expressions for the magnetic field near the side of a recording head and calculate the cosine transform of the longitudinal field... View full abstract»

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  • Preparation by sputtering of thick sendust film suited for recording head core

    Publication Year: 1977, Page(s):1029 - 1035
    Cited by:  Papers (26)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    A 12 μm thick film with large saturation flux density, 11 000 G, and high effective permeability, such as 240 at 20 MHz, was prepared by using tetrode sputtering equipment from a ternary alloy that consisted of Si:10.5 wt.%, Al:5.6 wt.%, and Fe:bal. (Si rich Sendust alloy) at a target voltage of 1000 VDC. These were the best conditions for obtaining the minimum value of coercivity ... View full abstract»

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  • Analytical model of a bubble switch

    Publication Year: 1977, Page(s):1035 - 1041
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    A model is presented for a bubble switch based on the Y-bar propagation element. Good correlation of the predictions of the model with experimental results is found for 8 μ bubbles. The heuristically derived scaling law, which predicts that the switching current must remain constant as the bubble diameter decreases, is confirmed by direct calculation with the model. The model shows that it wi... View full abstract»

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  • Principles of high-gradient magnetogravimetric separation

    Publication Year: 1977, Page(s):1045 - 1052
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (650 KB)

    A new approach is proposed for scale-up of the magneto-gravimetric separation (MGS) method hitherto limited to laboratory uses. The difficulties inherent in the present method, which makes use of paramagnetic solutions, are described in relation to the insufficient gradient. The new method, called HG-MGS, incorporates the basic principles of high-gradient and high-intensity magnetic separation, wi... View full abstract»

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  • Operation of a 100-bit, 2.6 µm bubble shift register

    Publication Year: 1977, Page(s):1041 - 1045
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    Complete circuit operation for a small 100-bit serial shift register memory with a 10.6 μm period fabricated on a garnet wafer using electron beam lithography and single level all-permalloy technology is reported. Overall circuit operation including generation, propagation, and detection was achieved with a 6 Oe bias margin using a 1 kHz rotating field. Although the circuit design and fabrica... View full abstract»

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  • Influence of slitting on core losses and magnetization curve of grain-oriented electrical steels

    Publication Year: 1977, Page(s):1053 - 1057
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    An experimental investigation was carried out by means of a single sheet and strip tester for electrical steels to find the effect of slitting on the magnetic properties of electrical strips of various widths (from 40 to 660 mm). Individual effects have been analyzed separately (slitting only, tension, and bending) regarding their influence on the deterioration of the magnetic properties of strips... View full abstract»

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  • Design optimization of small low-frequency power transformers

    Publication Year: 1977, Page(s):1058 - 1069
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    A technique is presented for designing transformers with given size and type of structure to have maximum volt-ampere (VA) output while at the same time insuring the satisfaction of a number of design constraints. The technique is based on a mathematical optimization problem whose solution is a set of parameter values characterizing the maximum VA output design. The existence and uniqueness of the... View full abstract»

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  • Steady-state analysis of parametric frequency changers

    Publication Year: 1977, Page(s):1070 - 1075
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    The operation of a parametric frequency changer of the two C-Core type is analyzed in both the frequency doubling and frequency halfing modes. The analysis begins with the formulation of two expressions which relate the flux in each core to the MMF's of the input and output circuits. A fifth-order polynomial is used to represent the nonlinear magnetization curve of the built-up magnetic structure ... View full abstract»

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  • Dispersion relations and normal modes for magnetoelastic waves in ferromagnetic insulators

    Publication Year: 1977, Page(s):1075 - 1077
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The dispersion relation and the normal modes for magnetoelastic waves in ferromagnetic insulator crystals are calculated when the interaction between magnetization and strains is approximated to a bilinear form of creation and annihilation boson operators. Numerical results are obtained for YIG. View full abstract»

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  • [Back cover]

    Publication Year: 1977, 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