Magnetic Thin Films for Perpendicular Magnetic Recording Systems

Part of the Nanostructure Science and Technology book series (NST)


In the advanced information society of today, information storage technology, which helps to store a mass of electronic data and offers high-speed random access to the data, is indispensable. Against this background, hard disk drives (HDD), which are magnetic recording devices, have gained in importance because of their advantages in capacity, speed, reliability, and production cost. These days, the uses of HDD extend not only to personal computers and network servers but also to consumer electronics products such as personal video recorders, portable music players, car navigation systems, video games, video cameras, and personal digital assistances.

IBM introduced the first HDD of the IBM 350 Disk File in 1956, which was the storage unit of the IBM RAMAC 305 computer [1]. It was composed of fifty 61 cm aluminum disks coated with iron oxide paint, and provided an areal density of 0.002 Mbit/inch2; in the last half century, the density has been increasing to beat the band.


Magnetic Domain Hard Disk Drive Perpendicular Magnetic Anisotropy Personal Digital Assistance Recording Layer 
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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Atsushi Sugiyama
    • 1
  • Takuma Hachisu
    • 2
  • Tetsuya Osaka
    • 2
  1. 1.Waseda Institute for Advanced StudyWaseda UniversityShinjuku-kuJapan
  2. 2.School of Advanced Science and Engineering, Waseda UniversityShinjuku-kuJapan

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