By Topic

Magnetic recording on FePt and FePtB intermetallic compound media

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

2 Author(s)
Li, Ning ; Seagate Technol., Bloomington, MN, USA ; Lairson, Bruce M.

Near-contact recording on high-coercivity FePt intermetallic compound media using a high Bsat write element was investigated. Untextured FePt media were prepared by magnetron sputtering on ZrO2 disks at a substrate temperature of 450°C, with postannealing at 450°C for 8 h. Both multilayer and cosputtered precursors produced the ordered tetragonal L10 phase with high coercivity between 5 and 12 kOe. To improve readback noise and decrease magnetic domain size, FePtB media were subsequently prepared by cosputtering. Overwrite, roll-off, signal-to-noise ratio (SNR), and nonlinear transition shift (NLTS) were measured by both metal-in-gap and merged magneto-resistive heads. FePtB media showed NLTS similar to that of commercial CoCrPtTa longitudinal media, but 5 dB lower SNR. By operating recording transducers in near contact, reasonable values of overwrite (>30 dB) could be obtained

Published in:

Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 2 )