Transaction of the Magnetics Society of Japan Special Issues
Online ISSN : 2432-0471
ISSN-L : 2432-0471
Volume 5, Issue 2
Displaying 1-2 of 2 articles from this issue
Magnetic Recording
  • D. Miyazaki, S. Saito, N. Honda, I. Tagawa
    Article type: Paper
    2021Volume 5Issue 2 Pages 55-59
    Published: September 01, 2021
    Released on J-STAGE: September 01, 2021
    JOURNAL FREE ACCESS

      The tilt angle of the crystal orientation axis was quantitatively evaluated for tilt-oriented magnetic film, and a method for separating the effective crystal magnetic anisotropy energy Kueff of the film from the intrinsic crystal magnetic anisotropy energy Kugrain of magnetic crystal particles was investigated. As a measurement sample, a Co/Pt multilayer magnetic film was formed on an underlayer composed of Ta and Pt by sputtering with a cylindrical collimator at an inclined incident angle of 60 deg. To quantitatively evaluate the crystal inclination angle, a rocking curve was measured with a three-dimensional polar-coordinate X-ray diffraction system, and in addition, the angle dependence of the magnetic switching field Hsw was measured with a Polar-Kerr system. It was also shown that both Kueff and Kugrain can be separated quantitatively even in tilt-oriented magnetic films by correcting the inclination angle of the crystal orientation axis when deriving the crystal magnetic anisotropy energy from a torque curve. The larger the angle of the crystal orientation axis, the larger the difference from the case without correction. Therefore, the derived equation becomes more effective as the inclination angle of the crystal axis gets larger.

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Power Magnetics
  • (Effect of Transport Direction on Levitation Performance during Transportation)
    A. Shiina, S. Kayama, M. N. Hakimi, K. Ogawa, T. Narita, H. Kato
    Article type: Paper
    2021Volume 5Issue 2 Pages 60-66
    Published: September 01, 2021
    Released on J-STAGE: September 01, 2021
    Advance online publication: May 26, 2021
    JOURNAL FREE ACCESS

      In the thin steel plate production line that is widely used for industrial products, contact conveyance is performed with rollers, but the deterioration in the quality of thin steel plates is a problem because scratches and irregularities occur on the surface of the plates. Therefore, non-contact magnetic levitation transfer of thin steel plates done using the attractive force of electromagnets has been proposed. However, we have not examined the levitation performance of a magnetic levitation system that uses a horizontal positioning control system and a curved magnetic levitation system. Therefore, we changed the bending direction of steel plates. It was found that the levitation stability tends to be different in the vertical and horizontal directions depending on the transport direction.

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