Wavelength response of perpendicular magnetic recording

Shun Ichi Iwasaki, Yoshihisa Nakamura, Hiroaki Muraoka

研究成果: Article査読

44 被引用数 (Scopus)

抄録

From the measurements of the surface field of a recording medium, it was obtained that an almost ideal step change distribution of magnetization is formed in perpendicular recording for digital signals. The fact represents that the upper limit of usable recording density is determined only by the resolution of a reproducing head. Therefore, the reproduction by a perpendicular head was successfully analyzed by using the reciprocity theorem. By introducing thickness loss of main pole of the head, the satisfactory coincidence was obtained between the calculated and the measured results in the wavelength response even at the densities of more than 150 kMRPI. In reproducing process, the magnetic interaction between the main pole and the medium acts so as to decrease the effective spacing between them.

本文言語English
ページ(範囲)2535-2537
ページ数3
ジャーナルIEEE Transactions on Magnetics
17
6
DOI
出版ステータスPublished - 1981 11

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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