日本応用磁気学会誌
Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192
23 巻 , 11 号
選択された号の論文の2件中1~2を表示しています
論文
  • 渡辺 洋, 廣田 好彦, 高橋 研
    1999 年 23 巻 11 号 p. 2083-2087
    発行日: 1999年
    公開日: 2007/03/20
    ジャーナル オープンアクセス
    The soft magnetic properties of Fe-Al-Nb-B alloy ribbons crystallized from an amorphous state were investigated. These alloy ribbons showed high magnetic flux density corresponding to that of Fe-based amorphous alloy ribbons after annealing. Fe79Al4Nb5B12 alloy ribbon showed particularly good soft magnetic properties (Bs=1.46 T, λs=2.0 × 10-6, Pc=15 Wkg-1 (f= 100 kHz, Bm=0.1 T)).
    The ribbons were composed of bccFe crystallites in the disordered phase, with a grain diameter of less than 20 nm. It was presumed that most of the Al in the alloy was contained in the bccFe crystallite.
  • I. Sasada, M. Yoshida
    1999 年 23 巻 11 号 p. 2088-2091
    発行日: 1999年
    公開日: 2007/03/20
    ジャーナル オープンアクセス
    A new method is presented by which grains in grain-oriented silicon steel can be imaged clearly through an overcoating. A miniaturized magnetic anisotropy probe consisting of an exciting coil and a pickup coil is used as a scanning device. Each grain of the silicon steel is detected as a region within which the easy axis of the magnetic anisotropy is determined to lie in a common direction. Because of its built-in spatial differentiation, the probe is also sensitive to magnetic dis-continuities in a specimen. With these two probe attributes, grains are imaged with the grain boundaries enhanced. The alignment of the easy axis, that is, the [100] direction projected onto the scanning plane with respect to the rolling direction, is displayed on a gray-scale level. Imaging results are shown for highly grain-oriented silicon steel sheets.
feedback
Top