By Topic

IEEE Transactions on Magnetics

Issue 1 • Date March 1972

Filter Results

Displaying Results 1 - 22 of 22
  • [Front cover and table of contents]

    Publication Year: 1972, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (753 KB)
    Freely Available from IEEE
  • Editorial

    Publication Year: 1972, Page(s): 1
    Cited by:  Papers (1)
    Request permission for commercial reuse | PDF file iconPDF (84 KB)
    Freely Available from IEEE
  • Tangential forces in overlapped pole geometries incorporating ideally saturable material

    Publication Year: 1972, Page(s):2 - 9
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    The tangential force in overlapped-pole and attracted-slab geometries typical of electromechanical devices is examined for the case of magnetic or dielectric material having an ideally square saturation characteristic. Simple force expressions for large overlap are presented, these indicating in general a doubling of force as compared with the linear case, and a linear rather than square-law varia... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transient magnetic field of a strip line with a magnetic keeper

    Publication Year: 1972, Page(s):10 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The transient magnetic field of a strip line in a memory device with a finite conductivity ground plane and a finite permeability magnetic keeper is studied. The driving source consists of a line current or a uniform current sheet. The waveform of the current is assumed to be piecewise linear. Laplace and Fourier transform methods are used to obtain the field. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An analysis of a clear-view angelfish bubble-domain shift register

    Publication Year: 1972, Page(s):16 - 22
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    A clear-view display and printing device is proposed utilizing a new bubble-domain shift register which has triangular patterns etched into the surface of a magnetic crystal. The geometrical and materials requirements for the clear-view shift register are analyzed. The etched-out triangular pattern is shown to provide the unidirectionality of bubble motion under an oscillating bias field just as t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Calculation of equipotentials and flux lines in axially symmetrical permanent magnet assemblies by computer

    Publication Year: 1972, Page(s):23 - 29
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    Two equivalent theoretical models of permanent magnets are used to develop algorithms for numerically computing the magnetic scalar potential and the magnetic vector potential in the vicinity of an axially symmetric array of pole pieces and permanent magnets. A computer program based on these algorithms calculates equipotential surfaces and flux lines in and around the magnets and pole pieces. In ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Directional solidification of Co-Cu-R permanent-magnet alloys

    Publication Year: 1972, Page(s):29 - 35
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2160 KB)

    Co-Fe-Cu-Ce permanent-magnet alloys have been prepared by directional solidification using a modified Bridgman technique. Samples melted at low superheat temperatures ( \Delta T \sim 20\deg C above the melting point of about 1100°C) and solidified at moderate rates (∼2.3 cm/h) resulted in a reasonably homogeneous columnar grain structure with a pre... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetization changes for cobalt-rare-earth permanent magnet alloys when heated up to 650°C

    Publication Year: 1972, Page(s):35 - 41
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    Changes in magnetization with temperature are of concern to the engineer designing permanent magnet devices. Of particular interest are the reversible and irreversible losses which occur when a magnet is heated to a slightly elevated temperature. In this paper the nature of the irreversible magnetization losses which occur when Co-Sm and other cobalt-rare-earth permanent magnets are heated above r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the magnetizations of the phase in alnico alloys

    Publication Year: 1972, Page(s):42 - 45
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The electrochemical properties of the Alnico alloys are shown to be sensitive to their state of precipitation. These properties thus are used as an indirect means for evaluating the individual properties of the ferromagnetic phases in these alloys. Results are then compared with recent findings and are shown to agree reasonably well, particularly in the case of Alnico 5. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The stability of EuO films doped with iron and europium

    Publication Year: 1972, Page(s):45 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The feasibility of a low-temperature beam-addressable memory utilizing EuO films doped with iron and excess europium as the storage medium is dependent upon the chemical stability of the divalent state of europium. The stability of such EuO films covered with a protective layer of Eu2O3has been examined as a function of temperature in various oxidizing atmospheres. The degrad... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Methods for measuring the magnetic field

    Publication Year: 1972, Page(s):48 - 51
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper introduces the following group of four papers, which review recent advances in selected areas of magnetometry: superconducting, thin film, resonance, and fluxgate. In addition, it refers to several other methods for measuring the magnetic field, pointing out their special utilities and any recent developments. A comparison of some of the performance characteristics of most types of magn... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Superconducting quantum magnetometers

    Publication Year: 1972, Page(s):51 - 60
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1648 KB)

    Magnetometers of remarkable sensitivity utilizing superconducting quantum flux detectors have recently become available. The mechanisms of operation and the present capabilities of these magnetometers and related instruments are described from an elementary viewpoint. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetic thin-film magnetometers for magnetic-field measurement

    Publication Year: 1972, Page(s):61 - 65
    Cited by:  Papers (6)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    Thin magnetic-film magnetometers used for magnetic-field measurement are reviewed and compared. A large variety of magnetic thin-film magnetometers have been constructed, and in some cases their properties are unique. A summary of thin-film magnetometers and their performance is provided. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Resonance magnetometers

    Publication Year: 1972, Page(s):66 - 75
    Cited by:  Papers (9)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1304 KB)

    Present-day resonance magnetometers form a very broad class of instruments capable of almost any magnetic-field measurement, especially since the advent of new types having a sensitivity of some 10-10G. However, the wide variety of existing devices makes any comparison between them difficult. This review will therefore put emphasis on the principles of operation and general properties o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Recent advances in fluxgate magnetometry

    Publication Year: 1972, Page(s):76 - 82
    Cited by:  Papers (37)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1504 KB)

    Fluxgate magnetometers, introduced in the 1930's, continue to be used in a variety of applications, such as magnetic air-borne detection, search and surveillance operations, nondestructive testing of materials, palaeomagnetism, and exploration of magnetic fields in space. This paper discusses recent analyses of fluxgate operation, the development of highly stable sensors for absolute measurement o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fabrication and properties of microwave lithium ferrites

    Publication Year: 1972, Page(s):83 - 94
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1664 KB)

    Lithium ferrites are low-cost materials which are attractive for microwave device applications. For a number of years these materials have been prominent in the computer core industry because of excellent temperature performance and the squareness of their hysteresis loops. Previous attempts at exploiting lithium ferrites for microwave applications have met with limited success. Properties which r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Faraday and kerr effects in magnetic compounds

    Publication Year: 1972, Page(s):95 - 105
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1288 KB)

    Some recent work on the magnetooptical properties of magnetic insulators and semiconductors is reviewed. Emphasis is placed on understanding the atomic origin of the Faraday and Kerr effects in terms of molecular-orbital energy levels. The classes of materials discussed are chromium trihalides, orthoferrites, garnets, ferrites, chromium spinels, and divalent europium compounds. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Magnetism of rare-earth elements, alloys, and compounds

    Publication Year: 1972, Page(s):105 - 130
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3432 KB)

    The magnetic properties of the rare-earth metals and a number of the alloy and compound systems formed with rare earths are discussed. Emphasis is placed on current experimental results of bulk magnetic measurements and related transport phenomena and their bearing on theoretical studies. Topics covered include exchange interactions, magnetization processes, crystal field effects and anisotropy, m... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic magnetoelastic coupling in ferromagnets and antiferromagnets

    Publication Year: 1972, Page(s):130 - 151
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2376 KB)

    Recent advances in the theory and application of dynamic magnetoelastic coupling in single-crystal ferromagnets and antiferromagnets are reviewed. As background, a linear model of a magnetoelastic ferromagnet is constructed by demanding that the small-signal equations lead to small-signal power-energy and stress-momentum conservation. Self-consistent boundary conditions are also discussed. Magneto... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Emission and absorption spectroscopy of magnetic materials

    Publication Year: 1972, Page(s):151 - 160
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1144 KB)

    In recent years, optical methods have been accepted as a useful means for studying the magnetic properties in solids. In this paper it will be shown, from an introductory point of view, what kind of information optical studies can provide. The most numerous investigations have been performed with insulating materials. The observed phenomena can be divided into four types: first those where spectra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neutron-diffraction determination of magnetic structures

    Publication Year: 1972, Page(s):161 - 182
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2648 KB)

    A brief review of magnetic structures determined by neutron-diffraction techniques is presented with particular emphasis on developments in the past few years. A number of recent experimental advances are described, including improvements in monochromators, the technique of neutron polarization analysis, and the profile-fitting method for analysis of neutron powder data. Theoretical aspects discus... View full abstract»

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

    Publication Year: 1972, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (1799 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