title: Perpendicular magnetic recording--its development and realization.
abstract: The principle of conventional magnetic recording is that magnetic fields are applied parallel to the plane of the magnetic medium. As described in this paper, the invention and development of a new method of placing the magnetized information perpendicular to the plane of the magnetic recording medium is presented. The yield in the mass production of high-density hard disk drives (HDDs) for perpendicular recording is much higher than that of HDDs for conventional recording. Consequently, it is estimated that as many as 75% of the 500 million HDDs to be shipped this year will use this technology.
authors.affiliation: Tohoku Institute of Technology, Sendai, Miyagi, Japan. iwasaki@tohtech.ac.jp
authors.forename: Shun-ichi
authors.initials: S
authors.lastname: Iwasaki
mesh_terms: D003308:Copying Processes / Q000379:methods*; D004581:Electronics; D008280:Magnetics / Q000379:methods*