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IEEE Translation Journal on Magnetics in Japan

Issue 12 • Dec. 1993

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Displaying Results 1 - 25 of 26
  • [Front cover]

    Publication Year: 1993, Page(s): c1
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  • List of contributors

    Publication Year: 1993, Page(s): nil1
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  • [Breaker page]

    Publication Year: 1993, Page(s): nil1
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  • Table of contents

    Publication Year: 1993, Page(s): 825
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  • Combined Type Thin Film Head for DCC

    Publication Year: 1993, Page(s):826 - 832
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    An inductive head for recording and a yoke type MR head for playback have been employed in a DCC system. It is difficult to fabricate these heads on the same substrate while controlling the head properties. We therefore developed a new hybrid thin film head. The new combined structure of the head enables simplification of the production process, and the head proved to be suitable for use in DCC sy... View full abstract»

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  • Recent Trends in the Development of Interstitially Modified Rare-Earth Intermetallic Compounds Produced by Gas Phase Reactions

    Publication Year: 1993, Page(s):833 - 841
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    Recent trends in the development of interstitially modified rare-earth intermetallic compounds produced by solid-gas phase reactions are reviewed. The effects of the H, N and C contents on the intrinsic magnetic properties of R-Fe-based compounds are summarized. The process for nitriding such compounds is briefly described. The successful fabrication of permanent magnets starting from Sm2 View full abstract»

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  • Review of Research and Development of Sm2Fe17Nx Hard Magnetic Material

    Publication Year: 1993, Page(s):842 - 852
    Cited by:  Papers (2)
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    Research and development of Sm2Fe17Nx hard magnetic materials is reviewed. In order to investigate the effects of different interstitial elements on the Th2Zn17 parent crystal structure and on the magnetic properties of the material, research on Sm2Fe17Cy compounds is also reviewed. The lattice constants a and ... View full abstract»

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  • An Analysis of the Segregated Microstructures of Electroless-Deposited CoNiP Perpendicular Magnetic Recording Media Using Selective Chemical Etching

    Publication Year: 1993, Page(s):853 - 857
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    The segregated microstructures of electroless-deposited CoNiP perpendicular magnetic recording media with various Hc(⊥) values-500, 1000 and 1500 Oe-were investigated using a selective chemical etching technique, in which Co-rich ferromagnetic regions were preferentially dissolved with an etchant of sodium hydroxide-m-nitrobenzenesulfonic acid-ethylenediamine aqueous solution. T... View full abstract»

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  • Perpendicular Magnetic Recording Media on Various Hard-Disk Substrates

    Publication Year: 1993, Page(s):858 - 863
    Cited by:  Papers (1)
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    Co-Cr perpendicular media on rigid substrates were studied. We used untextured glass substrates for perpendicular magnetic hard disks, but the reproduced output at short wavelengths was influenced by the surface roughness of the magnetic recording media. We therefore fabricated Co-Cr perpendicular hard disk media deposited onto different substrates: untextured glass, silicon single crystal, chemic... View full abstract»

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  • High-Frequency Permeability of Isotropic Co-Based Amorphous Films

    Publication Year: 1993, Page(s):864 - 869
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (761 KB)

    The dependence of soft magnetic properties on the annealing conditions of Co-based amorphous films of different thicknesses was investigated in detail, in order to obtain films with a high isotropic initial permeability at high frequencies. It was found that the microscopic anisotropy of films annealed in a rotating field was increased isotropically by field-free annealing below the Curie temperat... View full abstract»

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  • Magneto-Optical Properties of Cd1-xMnxTe Multiple Quantum Wells Prepared by the ICB Technique

    Publication Year: 1993, Page(s):870 - 874
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (601 KB)

    Cd1-xMnxTe/MnTe multiple quantum well structures were successfully grown on a sapphire (0001) substrate by using the ionized-cluster beam (ICB) technique, and their optical and magnetooptical properties were investigated. Transitions to the subband levels formed in wells were observed in the optical absorption and magneto-circular dichroism (MCD) spectra. The transition energ... View full abstract»

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  • Microstructure of Sputtered High-Coercive Fe-Pt Alloy Thin Films

    Publication Year: 1993, Page(s):875 - 880
    Cited by:  Papers (4)
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    Fe-Pt alloy thin films were prepared by the rf-magnetron sputtering method. From X-ray diffraction results and TEM observations, the following results were obtained: (1) the as-deposited films are disordered and consist of micrograins of size roughly 150~200 Å; (2) the annealed films are ordered, with grain sizes about 400~500 Å. A lamellar microstructure, which is considered to be a mic... View full abstract»

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  • Improvements in the Coercivity of Iron-Based Nanocrystalline Low-Rare-Earth Fe3B-Nd Permanent Magnets

    Publication Year: 1993, Page(s):881 - 887
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    Fe3B-based Nd-Fe-B permanent magnet materials containing Co and M as additives (M=Al, Si, Cu, Ga, Ag, Au) were prepared in an extremely low rare-earth concentration range centered on 4 at%. The hard magnetic properties develop as a result of heat treatment of rapidly solidified amorphous ribbons, which produces a metastable nanocrystalline structure consisting of Fe3B and Nd<... View full abstract»

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  • Soft Magnetic Properties and Structures of Nanocrystalline Fe-Al-Si-Nb-B Alloy Ribbons

    Publication Year: 1993, Page(s):888 - 894
    Cited by:  Papers (1)
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    The soft magnetic properties and structures of nanocrystalline Fe-Al-Si-Nb-B alloy ribbons crystallized from an amorphous state were investigated. The best soft magnetic properties (effective permeability at 100 kHz of 23,000, core loss at 100 kHz, Bm=0.1 T of 9 W/kg, and saturation magnetostriction λs of +0.5×10-6) were obtained for Fe66Al<... View full abstract»

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  • Soft Magnetic Properties of Microcrystalline Fe-Al-Si-Ni-Zr-B Alloys

    Publication Year: 1993, Page(s):895 - 900
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    The magnetic properties of Zr- and B-doped Supersendust (Fe-Al-Si-Ni) alloy ribbons were studied. Although the ribbons became brittle and their magnetization decreased with increases in the Zr and B contents, their soft magnetic properties were improved. Ribbons with ductility after melt quenching and fairly low coercivity after annealing were obtained when about 1.5 at% Zr and 8 at% B were added.... View full abstract»

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  • Very Thin Silicon Steel Tertiary Recrystallized by Continuous Annealing Method

    Publication Year: 1993, Page(s):901 - 905
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    It is well known that very thin grain-oriented silicon steel sheet has a very low iron loss. A continuous annealing method was used to obtain a long (over 1 m) thin grain-oriented silicon steel sheet. As a result, thin grain-oriented silicon steel sheet 40 μm thick and 1 m long was obtained. The annealing temperature was 1423K and the sample speed was from 0.7 to 2.1 mm/s. The annealing ti... View full abstract»

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  • Grain Size and Domain Width of a Very Thin 3% Si-Fe Sheet

    Publication Year: 1993, Page(s):906 - 911
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (786 KB)

    Very thin (less than 0.1 mm thick) grain-oriented silicon sheets are known to have lower iron losses than iron-based amorphous materials. It is possible to reduce the iron loss of very thin grain-oriented silicon steel further by applying new magnetic domain refining techniques. One method of domain refinement is through control of the grain size. We observed magnetic domains and measured the iron... View full abstract»

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  • Dynamic Properties of Very Thin 3% Si-Fe Cores in Relation to the Number of Layers

    Publication Year: 1993, Page(s):912 - 916
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    We previously reported that the estimated eddy current losses of very thin 3% Si-Fe strip-wound cores in the 500 Hz to 5 kHz frequency range agreed comparatively well with measured values. The eddy current losses were estimated by employing the number of domain walls in a modified Pry and Bean model. We observed the number of domain walis on outermost surfaces by SEM. In this study, in order to in... View full abstract»

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  • Soft Magnetic Properties of Fe/Fe-N Multilayered Films Prepared at Various Sputtering Gas Pressures

    Publication Year: 1993, Page(s):917 - 921
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    Fe/Fe-N multilayered films were prepared by alternation of Fe sputtering at various Ar gas pressures and ECR nitrogen plasma exposure, and the structure and magnetic properties of the resulting films were investigated. Growth of columnar structures was observed in Fe film prepared at high Ar gas pressure. Fe/Fe-N multilayered films with an Fe layer prepared at low Ar gas pressure have a low H... View full abstract»

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  • Magnetic Properties of R2T17-Type Compounds Dy2Fe17-x-yAlx with Iron Deficiency

    Publication Year: 1993, Page(s):922 - 926
    Cited by:  Papers (1)
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    The ternary R2T17-type alloys Dy2Fe17-x-yAlx with an Fe deficiency have been studied by means of X-ray diffraction and magnetization measurements. The single phase boundary of the R2T17-type structure was determined to be near the composition Dy2Fe9Alx for x≥4 and near Dy2 View full abstract»

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  • Soft Magnetic Properties and Microstructure of Co-Ta-N Films

    Publication Year: 1993, Page(s):927 - 933
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    Co-(0 to 15 at%) Ta-N sputtered films were studied in order to clarify the correlation between the structure, induced magnetic anisotropy, local anisotropy fluctuation, and soft magnetic properties. The results for electrical resistivity and film magnetostriction indicate that the temperature Tx1 at which Co crystallites are formed from an amorphous structure is lower than the temperatu... View full abstract»

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  • Substrate Bias Effect on the Magnetic Properties of Fe-Ta-N Films

    Publication Year: 1993, Page(s):934 - 940
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1596 KB)

    The effects of substrate bias on the magnetic properties and structure of Fe-TaN films deposited by a new sputtering method were investigated. Films sputtered using an rf bias of less than 80 W exhibit good soft magnetic properties and have a fine-grained microstructure consisting of α-Fe and TaN. The direction of the in-plane magnetic anisotropy of the films changes with the bias applied ... View full abstract»

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  • 1993 Index - IEEE Translation Journal on Magnetics in Japan, Vol.8

    Publication Year: 1993, Page(s):941 - 954
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  • [Advertisement]

    Publication Year: 1993, Page(s): 955
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  • [Advertisement]

    Publication Year: 1993, Page(s): 956
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Aims & Scope

IEEE Translation Journal on Magnetics in Japan is a publication of the IEEE Magnetics Society published between 1985 and 1994.

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Meet Our Editors

Editor-in-Chief
James E. Opfer
Hewlett-Packard