By Topic

Magnetic and read/write performance of CoCrTaPt perpendicular 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

3 Author(s)
T. Nagaoka ; Shibukawa Plant, Gumma, Japan ; C. Baldwin ; A. P. Payne

Third element additions have been effectively employed in CoCrX alloys for longitudinal recording as a means of improving magnetic performance. In this work, we report on similar modifications to Perpendicular (⊥) magnetic storage media. Specifically, we show how solid solutions of ≈10 at.% Pt in 78Co-17Cr-5Ta ⊥ recording media result in a significant increase in ⊥ anisotropy, coercivity and remanent magnetization. The impact on recording performance is manifested by an increase in pulse amplitude and a decrease in pulse width, combining to yield ≈25% increase in linear storage density. X-ray diffraction measurements show the Pt to be in solid solution with the Co lattice, and it is suggested that the increased anisotropy results from the Pt altering the intrinsic crystalline anisotropy constant of the alloy

Published in:

IEEE Transactions on Magnetics  (Volume:31 ,  Issue: 6 )