By Topic

IEEE Transactions on Magnetics

Issue 2 • June 1969

Filter Results

Displaying Results 1 - 15 of 15
  • [Front cover and table of contents]

    Publication Year: 1969, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (537 KB)
    Freely Available from IEEE
  • A survey of some physical limitations on computer elements

    Publication Year: 1969, Page(s):82 - 90
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1224 KB)

    Some limitations imposed on the basic attributes of computer elements that arise from physical law rather than from consideration of technology or cost are surveyed in the light of recent literature. In particular, discussions are given of the reliability of storage of information, of the physical size, and of the speed of response of elements of the memory of a large, high-speed, digital computer... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A theoretical limit to digital pulse resolution in saturation recording

    Publication Year: 1969, Page(s):91 - 97
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    A consistent method of calculating the single transition output voltage pulse shape of maximum resolution is derived. It follows (in a single mathematical step) both components of the magnetization through the demagnetization, remagnetization, flux collection, and differentiation processes appropriate to magnetic head readout. The single mathematical step is that of finding the Fourier transform o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetostrictive offset and noise in flux gate magnetometers

    Publication Year: 1969, Page(s):98 - 105
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB)

    Longitudinal magnetostriction of the core material is found to be the principal source of offset and noise in present state-of-the-art flux gate magnetometers. Magnetostrictive offset is identified with even harmonics of the steady-state induced EMF resulting from the periodic elongation (or contraction) of the core material. Magnetostrictive noise is identified with random fluctuations of the mag... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Influence of the substrate and electrolyte on the composition and properties of thin electrodeposited Ni-Fe films

    Publication Year: 1969, Page(s):106 - 111
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    The characteristics of electrolytes will be described which prevent composition gradients from developing as the result of differences in Ni++ and Fe++ diffusion, during the electrolytic formation of Ni-Fe films. This is accomplished by using an electrolyte additive which results in a solution which can be operated at a Ni-Fe ratio that is the same as desired in the film, making both the Ni++ and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The reduction of magnetism during the electrodeposition of thin permalloy films

    Publication Year: 1969, Page(s):112 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The paper includes a new aspect on elimination of the composition gradient in electrodeposited magnetic thin films. By addition of cathodically reducible ions of antimony, selenium, or tellurium to the electrolyte, it is possible to incorporate these non-magnetic elements in the initially deposited film zones preferably. Because of the high amount of the nonmagnetic element these inhomogeneous zon... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetic properties and creep observations of Ni-Fe films 30 to 300 Å thick

    Publication Year: 1969, Page(s):115 - 118
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    Coercivity, induced uniaxial anisotropy field, angular dispersion, residual stress, magnetic domain wall, and magnetization creep of vapor-deposited 81.7 Ni-18.3 Fe films are reported. The thickness and temperature dependence of the coercivity and the induced uniaxial anisotropy field in the thickness range from 30 to 16 000 Å are described. A substrate temperature range is given for minimum ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Strain insensitive Ni-Co films over a wide composition range

    Publication Year: 1969, Page(s):119 - 122
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The magnetic properties of vacuum deposited Ni-Co films have been studied as a function of film composition, film thickness, and substrate temperature. The experimental parameters ranged from 400-1000 Å for thickness 17-41-percent Ni for composition and room temperature to 300°C for the substrate temperature. It was found that the magnetoelastic strain coefficient approaches zero in the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A transmission line technique for measuring the properties of magnetic films

    Publication Year: 1969, Page(s):123 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A novel technique is described to use the magnetic-loading effect of a film on a strip transmission line as a means for measuring the magnetic properties (anisotropy and coercivity) of a thin film. This technique is easy to implement and is particularly useful for film arrays where strip transmission lines are of sufficient length to permit a clear resolution of the film-loading effect. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Thermal hysteresis in ferrite memory cores

    Publication Year: 1969, Page(s):125 - 132
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    The effects of different writing and reading temperatures on the switching voltage waveform, permeability, and flux state of standard nickel-copper-manganese and copper-manganese ferrite memory cores have been investigated over a temperature range of 0 to 70°C. These temperatures are well below the Curie temperatures of the materials being tested. It has been found that writing at a higher te... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetoelastic wave propagation in single-crystal lithium ferrite

    Publication Year: 1969, Page(s):132 - 136
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The time delay of a magnetoelastic wave traveling in a constant field gradient is obtained for a lossless ferrimagnet without the use of the small-coupling approximation. The theory is used to calculate the delay of microwave pulses in lithium ferrite and in yttrium iron garnet single crystals. Echoes delayed by magnetoelastic wave propagation in a rectangular bar of single-crystal lithium ferrite... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Forming structure and magnetic properties of Alnico VS55 alloys

    Publication Year: 1969, Page(s):136 - 139
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    Some results of explorations on crystallographic structure perfection of Alnico VS55 single crystals are presented. Segregation and block disorientation in crystals are shown to have some influence on the process of spinodal decomposition in a magnetic field, and on permanent magnet properties. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Observation of rotational variations in plated wire memory elements

    Publication Year: 1969, Page(s):139 - 140
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On carrier-frequency gating systems for static switching circuits

    Publication Year: 1969, Page(s):140 - 142
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Carrier-frequency gating systems for exciting static electronic switches such as thyristors are examined. The effect of the commutation in the output rectifiers during transmission of the carrier wave is to cause an instantaneous drop in the output voltage during commutation. A compensation for the commutation drop by an overlap technique is proposed, and comparative experimental observations pres... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1969, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (719 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