By Topic

Stacked Structure Media for High Density Perpendicular Recording

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Jun Ariake ; Akita Prefectural R&D Center ; Saori Watanabe ; Naoki Honda

Perpendicular magnetic recording media with a new stacked media structure are proposed in this study. A distinct magnetically isolated granular Co-Pt-TiO2 film and a Co-Pt top layer for controlling an exchange coupling of the granular film were used to realize the stacked layer. By adding the top Co-Pt layer, Hs (saturation field) becomes small with reduced DeltaHc/Hc (narrower magnetic anisotropy distribution) and increased KuV/kBT (enhanced thermal stability). By changing Ar gas pressure of the top layer deposition, the exchange coupling of the granular layer could be precisely controlled. Film microstructure analysis revealed that a Co-Pt top layer deposited at high Ar gas pressure forms a granular structure. On the other hand, low gas pressure deposition formed a continuous structure with grains connected each other similar to a continuous layer of the CGC (coupled granular continuous) media

Published in:

IEEE Transactions on Magnetics  (Volume:43 ,  Issue: 6 )