IEEE Transactions on Magnetics

Issue 2 • June 1965

Filter Results

Displaying Results 1 - 13 of 13
  • [Front cover and table of contents]

    Publication Year: 1965, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (190 KB)
    Freely Available from IEEE
  • Administrative committee members

    Publication Year: 1965, Page(s): 83
    Request permission for commercial reuse | PDF file iconPDF (357 KB)
    Freely Available from IEEE
  • A general frame for the displacement model of magnetization in ferromagnetics and some of its consequences

    Publication Year: 1965, Page(s):84 - 87
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (457 KB)

    This author has shown previously that, by the proper use of the Lagrangian Function density method, a set of equations analogous to Maxwell equations for the ferromagnetic medium is obtained, involving an additional term, called "structural currents density," in thenablaxHequation. Thus, the material macroscopic parameters appear to be not the constants assumed a priori (as in classical... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A magnetic amplifier for the visual presentation of low-frequency hysteresis loops of very small ferromagnetic samples

    Publication Year: 1965, Page(s):87 - 90
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (481 KB)

    This paper describes a magnetic amplifier based on the principle of permeability tuning, and intended for the amplification of small, low-impedance signals obtained from a small ferromagnetic sample (e.g., a ferrite memory core or a thin film). The apparatus is able to produce a good display of a flux as low asDeltaphi = 10^{-12}V/s at 50 c/s. In this case, the signal power applied to t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An experimental study of flux presetting-resetting characteristics of magnetic cores with rectangular hysteresis loop

    Publication Year: 1965, Page(s):91 - 95
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (502 KB)

    When magnetic cores with a square hysteresis loop are used for a time delay Crcuit or a pulse counter circuit, and if these circuits are designed by the use of the static hysteresis loop, the ac magnetization curve, or the control magnetization curve (CMC) which is the basic characteristic of a magnetic amplifier, there is apt to be a marked discrepancy between their design values and measured val... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The characteristics of ferrite cores with low Curie temperature and their application

    Publication Year: 1965, Page(s):96 - 100
    Cited by:  Papers (20)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    The utility of ferrite cores which have the Curie temperature in the vicinity of the room temperature and suddenly change the permeability vs. temperature characteristic near the Curie temperature is described in this paper. Using the characteristics of these ferrite cores, the author made an overcurrent relay and a long delay circuit, and investigated their application to a temperature control de... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An investigation of separation losses in high-speed, high-density recording tapes

    Publication Year: 1965, Page(s):101 - 104
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    The trend in digital tape recording is toward larger storage capacity and faster accessing, which necessitate packing information at greater densities on tapes moving at higher speeds. The losses that inevitably arise from the finite separation between the head and the moving tape become much more serious as the length of the magnetized regions in the tape is reduced and as the relative velocity o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An investigation of high-frequency bias-induced tape noise

    Publication Year: 1965, Page(s):105 - 110
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Bias-induced tape noise remains a major limitation of the SNR in audio magnetic tape recording systems. Defined as the increment in system noise incurred when the bias oscillator is turned on, the noise can originate from a number of different causes; namely, bias oscillator harmonic distortion, magnetized heads, the earth's magnetic field, and an intrinsic noise source. The latter noise source is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A magnetic feedback modulator for improved FM carrier recording

    Publication Year: 1965, Page(s):111 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Magnetic multivibrators are often used as voltage-controlled oscillators in FM carrier recording systems. These oscillators generally consist of two switching transistors connected to a center tapped coil on a square loop magnetic core. The transistors operate alternately in saturation, driving the core between its positive and negative saturation limits. Frequency then depends upon saturation flu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some regulated power supply apparatus using the Morgan circuit

    Publication Year: 1965, Page(s):115 - 121
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The SCR chopper circuit has a very wide range of application in regulating a dc power, and its merits are universally appreciated. Because of its merits, the circuit is most suitable for a nonfailure power source that supplies power from a set of rectifier-batteries to a communication equipment or any other electronic equipment, which requires a dc power source of several output voltages. For such... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetoresistive amplifiers with superconductive elements

    Publication Year: 1965, Page(s):122 - 126
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The construction and properties of certain superconductive amplifiers in which the resistance of a gate element is controlled by the electromagnetic field of a signal coil are described in this paper. Vacuum-deposited films of tin, which have narrow resistive transition widths, have been used as the gate elements, and the field has been applied perpendicularly to the film surface. The parameters o... View full abstract»

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

    Publication Year: 1965, Page(s): 0
    Cited by:  Papers (1)
    Request permission for commercial reuse | PDF file iconPDF (1162 KB)
    Freely Available from IEEE
  • Eddy current loss in saturated solid magnetic plates, rods, and conductors

    Publication Year: 1965, Page(s):126 - 137
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1128 KB)

    Included in this paper is a procedure which utilizes the digital computer to solve eddy current loss problems when the magnetization process extends into the nonlinear region of the magnetization curve. The values of permeability used in the equations are obtained from the actual magnetization curve, thus eliminating the approximations employed in most previous investigations. The nonlinear partia... 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