By Topic

Evolution of Perpendicular Recording Media Grains on Carbon-Based Synthetic Nucleation Layer

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

5 Author(s)
Piramanayagam, S.N. ; Data Storage Inst., Agency for Sci. Technol. & Res., Singapore ; Srinivasan, Kumar ; Tan, H.K. ; Lim, B.C.
more authors

Perpendicular recording media, where the recording layer is deposited on carbon-based synthetic nucleation (SN) layers, have been investigated for magnetic and microstructural properties. It was observed that the recording layers deposited directly on low-pressure sputtered Ru layers with and without an SN layer showed a similar microstructure from plan-view TEM images. However, the magnetic properties of the media with SN layer show better intergranular segregation, whereas the media without SN layer show signs of strong intergranular exchange coupling. Recording layer thickness dependent studies indicate that the 3-nm-thick recording layer deposited on the Ru layer directly without SN layer showed rectangular hysteresis loop, indicating the formation of a continuous layer. A recording layer (3 nm) deposited on an SN layer showed a superparamagnetic type of hysteresis loop, indicating better intergranular segregation. Transmission electron microscopy observations also indicate that the recording layer deposited on SN layer shows better segregated structure even at 3 nm. The results indicate that SN layer is beneficial for grain size reduction as well as eliminating the initial continuous layer formed in the recording layer.

Published in:

Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 2 )