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Magnetics, IEEE Transactions on

Issue 2 • Date June 1967

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Displaying Results 1 - 14 of 14
  • [Front cover and table of contents]

    Publication Year: 1967 , Page(s): 0
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    Freely Available from IEEE
  • Magnetic scan head for high-frequency recording

    Publication Year: 1967 , Page(s): 96 - 100
    Request Permissions | Click to expandAbstract | PDF file iconPDF (622 KB)  

    A stationary magnetic head scans the width of a record magnetically, enabling successive lines of video information to be recorded on a slowly moving tape. The head contains a large number of laminations. All except one of these are blocked from transducing action with the tape by currents through sweep windings. As the sweep currents are changed, every lamination becomes active in succession. For... View full abstract»

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  • On the dynamic properties of cascaded self-saturating magnetic amplifiers

    Publication Year: 1967 , Page(s): 100 - 107
    Request Permissions | Click to expandAbstract | PDF file iconPDF (749 KB)  

    The influence of some parameters of the 2-stage self-saturating magnetic amplifier on its steady-state and transient properties is described. It is shown that applying an R,C filter between both stages ensures proper operation of the amplifier. On the basis of the difference equations describing the single stage self-saturating magnetic amplifier, the discret... View full abstract»

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  • Stability analyses of self-saturating magnetic amplifiers with capactive load

    Publication Year: 1967 , Page(s): 108 - 116
    Request Permissions | Click to expandAbstract | PDF file iconPDF (768 KB)  

    Analyses of the self-saturating magnetic amplifiers are generally restricted to the pure resistive load cases. There are a few reports related to capacitive loads and some others on inductive loads. The possibility of occurrence of abnormal phenomena in the self-saturating magnetic amplifier with capacitive load has been reported, but their mechanism of circuit behavior is not yet clear. In this p... View full abstract»

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  • Polyphase multivibrators

    Publication Year: 1967 , Page(s): 117 - 124
    Cited by:  Papers (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (660 KB)  

    A new type of polyphase multivibrator is introduced in which saturable cores are the timing elements and transistors the switching elements. The basic units are like the multivibrators invented by Royer and others, but, in the new polyphase circuit, several single-phase multivibrators with a common dc source are constrained by a loop connection of windings on the cores in such a way that polyphase... View full abstract»

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  • Analysis of minor loop behavior during alternating flux reversal in rectangular-loop toroidal cores

    Publication Year: 1967 , Page(s): 125 - 135
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3008 KB)  

    The analysis of minor hysteresis loop behavior during partial alternating flux reversal in toroidal cores with a rectangular hysteresis loop is considered. A simple flux-reversal model is proposed on the basis of which, with the aid of dimensionless units, the asymmetry of minor hysteresis loops is derived. The drift of minor hysteresis loops during alternating flux reversal is investigated on the... View full abstract»

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  • Design of half-million bit wire memory

    Publication Year: 1967 , Page(s): 135 - 141
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (651 KB)  

    A high volumetric density wire memory stack of 12 000 bits/in3was designed. The high bit density was obtained by the introduction of a novel and continuous digit line printed circuit which is also used to separate and support the plated wires. The printed circuit is also used for interconnecting the planes of the memory stack. Analysis of digit current and signal coupling is given. The ... View full abstract»

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  • Magnetization creep in magnetic films

    Publication Year: 1967 , Page(s): 141 - 157
    Cited by:  Papers (20)  |  Patents (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2343 KB)  

    Magnetization reversal in planar magnetic films can occur for field amplitudes well below the static threshold. Repeated field transitions parallel to a film's hard axis in the presence of an easy-axis field can cause slow motion or creeping of the domain boundaries. Experimental observations of magnetization creep and proposed creep mechanisms are reviewed. Creep was studied in slow-rising sinewa... View full abstract»

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  • The effects of metallic underlayers on Properties of permalloy films

    Publication Year: 1967 , Page(s): 157 - 162
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1120 KB)  

    Thin Permalloy films of zero-magnetostrictive composition were evaporated on a variety of metal film underlayers of various thicknesses (which were deposited on glass substrates) and also on smooth metallic substrates. In contrast to Prosen et al., however, the observed uniaxial magnetic anisotropy is not zero. In thin Permalloy films (100-1000 Å) deposited on high melting-point metal films (... View full abstract»

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  • Mathematical models for loss measurements in thin permalloy films with ramp drives

    Publication Year: 1967 , Page(s): 162 - 165
    Request Permissions | Click to expandAbstract | PDF file iconPDF (426 KB)  

    Uniaxial thin Permalloy films are driven with a large amplitude sinusoidal H field in order to approximate a ramp drive. The H field is characterized by rise times which exceed 3 \times 10^{6} Oe/s. Two mathematical models are suggested to represent the loss measurements obtained in a d... View full abstract»

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  • A study of noncoherent rotational switching for thin magnetic films

    Publication Year: 1967 , Page(s): 166 - 170
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (632 KB)  

    Thin magnetic film switching was investigated for fields near those needed for pure rotation. Experimentally the films were switched using <0.4 ns rise time field pulses. The resulting flux changes were detected in the easy and hard direction with a response time of 0.6 ns. Measurements were made for pulses both longer and shorter than the magnetization switching times. By analyzing the voltage... View full abstract»

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  • Demagnetization adjustment of the anisotropy of magnetic thin films

    Publication Year: 1967 , Page(s): 171 - 172
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    First Page of the Article
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  • Correction to "Demagnetization theory for longitudinal recording"

    Publication Year: 1967 , Page(s): 171
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    First Page of the Article
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  • Contributors and back cover

    Publication Year: 1967 , 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