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IEEE Transactions on Magnetics

Issue 2 • Date June 1968

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Displaying Results 1 - 21 of 21
  • [Front cover and table of contents]

    Publication Year: 1968, Page(s): 0
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  • Advances in applied magnetics

    Publication Year: 1968, Page(s):82 - 83
    Cited by:  Papers (1)
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  • Permanent magnet materials

    Publication Year: 1968, Page(s):84 - 99
    Cited by:  Papers (3)
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    Permanent magnets are finding ever-increasing uses as magnet technology develops and materials improve. Permanent magnet materials are evaluated in terms of the geometry and configuration of the application for which they are intended. The origin of the properties of most modern permanent magnet materials is interpreted in terms of fine-particle theory. The fine-particle structures are produced ei... View full abstract»

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  • Superconducting magnets

    Publication Year: 1968, Page(s):99 - 107
    Cited by:  Papers (1)
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    Although small superconducting magnets have been in regular use in many laboratories for several years, it is only recently that the technical difficulties preventing the use of superconductors in large magnet systems have been overcome. A better understanding of the transient thermal and magnetic behavior of such devices has led to various methods of reducing or eliminating the degradation effect... View full abstract»

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  • Magnetostrictive materials and applications

    Publication Year: 1968, Page(s):107 - 117
    Cited by:  Papers (1)
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    The dynamic magnetostrictive properties of materials and their applications will be reviewed. The order of presentation is to first discuss the various dynamic magnetostriction contents K (defined by Smith), λ and γ (defined by Butterworth and Smith), and Γ (defined by the present author). Next, the application of the magnetic domain theory to d... View full abstract»

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  • Microwave ferrite materials and devices

    Publication Year: 1968, Page(s):118 - 133
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1976 KB)

    The crystal structure of ferrites including garnets and their methods of preparation are first reviewed. This is followed by an examination of microwave ferrite devices and their application to actual systems. Sufficient theoretical details as well as an extensive though not exhaustive list of references are included for ready reference. The most widely used microwave ferrite device is the isolato... View full abstract»

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  • Ferrite memory systems

    Publication Year: 1968, Page(s):134 - 145
    Cited by:  Papers (2)
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    Ferrites have been the dominant memory technology for 15 years. Ferrite memory systems are surveyed in the context of the advances which have been made in the technology over this period. Advances in organization, storage devices, drive and sense systems, and manufacturing techniques are reviewed. This discussion leads to a consideration of the future of the technology which takes into account the... View full abstract»

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  • Magnetic film memory systems

    Publication Year: 1968, Page(s):146 - 152
    Cited by:  Papers (4)  |  Patents (3)
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    The factors which must be considered in a magnetic film memory system design are enumerated. Particular attention is given to optimizing the amount of flux in a storage cell and the minimum signal requirements. The analyses performed indicate that memory size, memory speed, memory organization, and integrated circuit drive capability determine optimum requirements for storage flux in a magnetic ce... View full abstract»

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  • A survey of magnetooptic effects

    Publication Year: 1968, Page(s):152 - 161
    Cited by:  Papers (15)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB)

    The interaction of light with matter involves the electronic structure of the matter. In particular, the interaction is affected by the magnetic state of the medium, and this gives rise to the magnetooptical effects. The Faraday, Kerr, and Voigt effects are described, and their derivation from Maxwell's equations and the constitutive relations are given. The microscopic origins of the effects are ... View full abstract»

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  • Magnetoresistance displacement transducers

    Publication Year: 1968, Page(s):162 - 165
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    An analysis of the magnetoresistance effect used as a displacement transducer shows that the device is more sensitive in the moving armature mode of operation than it is in the moving element mode. An experimental sensitivity of 1.1 \times 10^{2} V/m was readily achieved. This was in good agreement with the calculated sensitivity, showing that the performance... View full abstract»

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  • Flux storage characterstics of thin magnetic films for analog operation

    Publication Year: 1968, Page(s):166 - 170
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Thin magnetic films may be employed as storage elements of a sampling recorder for measuring transient signals. By writing into successive films with a given signal at known time intervals and then utilizing the magnetization transfer characteristics, i.e., readout voltage versus write current, a time-amplitude reconstruction of the signal can be obtained. This mode of operation for a coupled thin... View full abstract»

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  • The bimodal state of magnetization in annealed cylindrical permalloy films

    Publication Year: 1968, Page(s):171 - 175
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The shapes of commonly observed nonideal Belson traces in cylindrical Permalloy films have been derived by considering a bimodal distribution of easy axes induced by annealing multidomain films in a hard-direction field. In the bimodal state the film behaves like a mixture of two differently skewed regions, each of which contributes additively to the Belson curve. In the simplest bimodal case, sym... View full abstract»

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  • Corrections: A novel type reversal propagating at high speed

    Publication Year: 1968, Page(s): 178
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  • An optical faraday rotation technique for the determination of magnetic relaxation times

    Publication Year: 1968, Page(s):175 - 178
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    A technique is described for the measurement of macroscopic magnetic relaxation times in crystals using the optical Faraday rotation as a monitor of the magnetization. The method is applied to the paramagnetic Eu2+ion in CaF2:Eu2+at cryogenic temperatures. In this experiment the crystal is placed between a crossed polarizer and analyzer and subjected to a pulsed ma... View full abstract»

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  • Corrections: Curvature of domain walls

    Publication Year: 1968, Page(s): 178
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  • Force measurements on magnetic reeds

    Publication Year: 1968, Page(s):179 - 183
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    With recent trends towards miniaturization, the magnetic reed relay or dry reed switch has become so small that force measurement by ordinary mechanical methods is extremely difficult. However, knowledge of such forces enables the prediction and control of opening and closing currents, contact forces, and general behavior of the device. An experimental method is given of measuring the quasi-static... View full abstract»

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  • Interpretation of parallel pumping experiments near the magnetoelastic interaction region

    Publication Year: 1968, Page(s):184 - 192
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    A general method for the calculation of parallel pump instability thresholds of magnetoelastic waves is presented. The analysis takes into account variation in direction of applied field and propagation vector in the crystal lattice, and the effects of magnetoelastic anisotropy are included. It is found that variation in the direction of propagation is expected to modify the shape of experimentall... View full abstract»

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  • Memory core design and drive pulse optimization using a charge model of the storage core and its computer implementation

    Publication Year: 1968, Page(s):193 - 196
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    The representation of the switching characteristics of the ferrite memory core by flux-charge curves and the derivation of significant design or application parameters for a new, undeveloped ferrite memory core are described. The technique used is that of appropriately scaling flux and charge by a computer program. User options permit computation of signal and noise amplitudes and waveforms, read ... View full abstract»

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  • Write-noise relaxation in magnetic film memories

    Publication Year: 1968, Page(s):197 - 204
    Cited by:  Papers (2)
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    In magnetic film memories incorporating a metal ground plate, the write noise, i.e., the sense-line voltage caused by application of the bit-current pulse, has a long "tail." By an analysis of pulse propagation along a conductor with rectangular cross section above a stratified ground plate, it is shown that 1) the slow decay of the write noise is due to current diffusion into the ground plate, an... View full abstract»

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  • Comments on "Technique for determining magnetization and field distributions in magnetic films"

    Publication Year: 1968, Page(s): 205
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  • [Back cover]

    Publication Year: 1968, Page(s): 0
    Cited by:  Papers (5)
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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