# IEEE Translation Journal on Magnetics in Japan

## Filter Results

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

Publication Year: 1987, Page(s): c1
| PDF (1192 KB)
• ### List of contributors

Publication Year: 1987, Page(s): nil1
| PDF (236 KB)
• ### [Breaker page]

Publication Year: 1987, Page(s): nil1
| PDF (236 KB)
• ### Opinion

Publication Year: 1987, Page(s): 577
| PDF (137 KB)

Publication Year: 1987, Page(s):578 - 579
| PDF (147 KB)
• ### R/W Experiment Using High-Speed Flexible Disk

Publication Year: 1987, Page(s):580 - 588
Cited by:  Papers (2)
| | PDF (1084 KB)

First Page of the Article
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• ### Development of a 3.5-Inch High-Speed and High-Capacity FDD

Publication Year: 1987, Page(s):589 - 595
| | PDF (693 KB)

First Page of the Article
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• ### Barkhausen Noise in Yoke Type MR Heads (I)

Publication Year: 1987, Page(s):596 - 608
Cited by:  Papers (1)
| | PDF (3041 KB)

First Page of the Article
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• ### Barkhausen Noise in Yoke Type MR Heads (II)-Inverse Effect of Magnetostriction

Publication Year: 1987, Page(s):609 - 618
| | PDF (2197 KB)

First Page of the Article
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• ### Magnetic Anisotropy of Ion-Implanted (100), (110) Garnet Films

Publication Year: 1987, Page(s):619 - 625
| | PDF (720 KB)

Anisotropy changes caused by He+ and H2+ implantations in (100), (110), and (111) magnetic garnet films have been studied. In (100) films, in striking contrast to (111) films, uniaxial anisotropy field changes were almost the same for He+ and H2+ implantations. In (110) films, the orthorhombic anisotropy parameter B changed greatly ... View full abstract»

• ### Orthorhombic Magnetic Anisotropy in (EuBi)3Fe5O12 Garnet (110) Films

Publication Year: 1987, Page(s):626 - 631
| | PDF (670 KB)

It was found that a large orthorhombic anisotropy is induced in (EuBi)3Fe5O12 garnet films grown on (110) NdGG substrates. The Bi content is controlled by regulating the melt composition and the supercooling temperature. Gyorgy's parameter B = -2(Ku + Kp) increases linearly with the Bi content. The main part of B was found to be growth-induced. Gyorgy's ... View full abstract»

• ### Magneto-Optical Properties of (GdBi)3(FeAl)5O12 Bulk Single Crystals and Their Application to a 1.3 μm Optical Isolator

Publication Year: 1987, Page(s):632 - 639
Cited by:  Papers (1)
| | PDF (1541 KB)

A compact optical isolator has been developed for use at a wavelength of 1.3 μm, using a Bi-substituted gadolinium iron garnet (Gd3-xBixFe5O12) single crystal as a Faraday rotator. The optical isolator features a 0.35 dB insertion loss, 34 dB backward loss, and approximately 33.6 dB isolation ratio at 1.3 μm. The insertion loss and the ma... View full abstract»

• ### Horizontal Incidence Observation of Magnetic Fields in the Scanning Electron Microscope

Publication Year: 1987, Page(s):640 - 642
| | PDF (586 KB)

A method for observing the leakage magnetic fields from recorded bits in magnetic media samples is described. When a primary electron beam is directed parallel to the surface of the sample, the Lorentz force resulting from the leakage field deflects electrons either toward or away from the sample surface; those deflected toward the sample strike the surface, generating secondary electrons. By scan... View full abstract»

• ### Relationship Between Magnetization of a Recording Medium and Developing Magnetic Field in Magnetography

Publication Year: 1987, Page(s):643 - 644
| | PDF (224 KB)

During development of images in magnetography, the developing magnetic field interacts with the field formed by the latent magnetic image, affecting the resulting image resolution. When the developing field is oriented in the same direction as the image field, the tendency for adhering toner to bridge'' the interval between neighboring magnetization transitions is strengthened, and vice-versa if... View full abstract»

• ### Single Pole Type Heads with Co-Zr-Nb/SiO2 Multilayered Films

Publication Year: 1987, Page(s):645 - 647
| | PDF (647 KB)

Multilayer films, consisting of two Co-Zr-Nb layers separated by an intermediate SiO2 layer were fabricated, and then compared with single-layer films for use in single-pole perpendicular magnetic recording heads. The dependences of film coercivities on the intermediate layer thickness were determined, and domain structures observed. Whereas narrower track widths lead to prominent closu... View full abstract»

• ### Numerical Analyses of Recording Charcteristics in Single Pole Heads

Publication Year: 1987, Page(s):648 - 650
| | PDF (314 KB)

A computer program, developed by the authors for use in numerical analysis of the recording characteristics of single pole heads, was employed to study the effects of the pole material squareness ratio S, a tapered pole shape and a second pole layer, on the reproduced voltage. Results for the dependence on the squareness, which corresponds approximately to the domain inclination angle, agreed with... View full abstract»

• ### Thin Film Head for Perpendicular Magnetic Recording

Publication Year: 1987, Page(s):651 - 652
Cited by:  Papers (1)
| | PDF (216 KB)

Thin film heads for perpendicular recording were fabricated, with a main pole of Co-Zr-Nb and auxiliary pole of Permalloy, and their performances compared with those of unilateral bulk-type heads. When recording at 1.7 kFCI, the thin film heads yielded outputs twice as high as bulk heads at the same recording current. According to FEM analyses, this is because from 25 to 50 percent of the magnetic... View full abstract»

• ### Characteristics of a Perpendicular Magnetic Head

Publication Year: 1987, Page(s):653 - 654
Cited by:  Papers (1)
| | PDF (226 KB)

Large-scale models of a single pole type perpendicular recording head, as well as actual-size prototype heads, are constructed, and the dependences of the normalized playback output on the main pole length, track width and main pole permeability are compared. The results obtained using the model agree well with the results for the prototype heads. Such models can be useful in studying the characte... View full abstract»

• ### Finite Element Method Analysis for Recording Head Under Complex Permeability

Publication Year: 1987, Page(s):655 - 656
| | PDF (200 KB)

The influence of complex permeability on magnetic recording heads was analyzed using strict formulas for the finite element method modified to take account of complex permeability. Positional differences between the field intensity and flux density at each frequency showed that there is a loss coefficient due to complex permeability. This loss coefficient is practically zero at all frequencies in ... View full abstract»

• ### Sputtered Fe-Si-Al Alloy Film Video Head

Publication Year: 1987, Page(s):657 - 658
Cited by:  Papers (1)
| | PDF (625 KB)

Read/write characteristics of a prototype narrow-track video head using sputtered Fe-Si-Al alloy thick film were studied. The I/O characteristics showed that recording capability is sufficiently high, and read-out output exceeded that of a ferrite head per unit coil turn and unit track width, demonstrating that both parameters of the prototype head are sufficient for practical applications. It was... View full abstract»

• ### Magnetic Read-out Head Using Induced RF Permeability Variation in Ni-Fe Thin Film

Publication Year: 1987, Page(s):659 - 660
| | PDF (243 KB)

A field-sensitive type single pole read-out head was trial-fabricated and its characteristics were studied. Play-back sensitivity in the lower recording frequency region declined as the thickness of the Ni-Fe film decreased, but in the higher recording frequency region the read-out output level was independent of Ni-Fe film thickness maintaining an almost constant level, much higher than conventio... View full abstract»

• ### A Tilted Sendust Sputtered Ferrite Video Head

Publication Year: 1987, Page(s):661 - 662
| | PDF (205 KB)

A compound magnetic head was developed by combining the high frequency magnetic characteristics of ferrite and the high Bs characteristics of sendust. Various running surface shapes were experimented with to overcome the wobbling'' in the read-out output frequency characteristics caused when the ferrite head tip section is within the track orbit. Placing the ferrite head tip section a... View full abstract»

• ### Bias Magnetic Field Dependence of RF Permeability in Thin Permalloy Films

Publication Year: 1987, Page(s):663 - 664
| | PDF (200 KB)

Dependence of RF permeability (μRF = μ'RF - j μ'RF) on a bias magnetic field (H: corresponding to a signal field) in a permalloy film, when H and RF exciting magnetic fields (HRF) are in the direction of the hard axis in Permalloy films, was analyzed with the film taken as a single domain, the demagnetizing field in the film plane taken as 0, HRF assum... View full abstract»

• ### Hybrid Heads and Recording Analysis

Publication Year: 1987, Page(s):665 - 667
| | PDF (283 KB)

A hybrid head employing a high saturation flux density material on one gap surface and low saturation flux density material on the other was studied. Compared with the values for normal heads, the hybrid head had about 1.4 times the value of the maximum magnetization gradient on the recording media and its magnetization gradient half-width was significantly less. These results show that it is reas... View full abstract»

• ### Reproducing Analysis of Hybrid Heads

Publication Year: 1987, Page(s):668 - 670
| | PDF (272 KB)

Read-out characteristics of a compound type head with excellent recording characteristics were studied. It was found that the magnetization gradient and residual magnetization both decreased as the depth of the media increased, and that the requirements of permeability and saturation flux density for low-saturation flux density films are not hard to satisfy. With its low-saturation flux density la... View full abstract»

## Aims & Scope

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

Full Aims & Scope

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