By Topic

Effects of surface oxidization of amorphous Ni-based alloy seed layers on noise in CoCrPt/CrTi 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

7 Author(s)
Y. Matsuda ; Div. of Data Storage & Retrieval Syst., Hitachi Ltd., Kanagawa, Japan ; K. Sakamoto ; Y. Takahashi ; K. Tanahashi
more authors

New amorphous seed layers of NiCrZr and NiTa have been developed to reduce the noise of CoCrPt/CrTi thin film media on a glass substrate. By exposing the surfaces of the Ni-based amorphous seed layers to low pressure oxygen of the order of 10-3 Pa, the crystal orientation of the CoCrPt magnetic layer is changed from random-like to (11.0), and the magnetic crystal grain size is reduced as in the case of Co-based amorphous seed layer of CoCrZr. These changes in microstructure result in higher coercivities and lower media noises in both cases for the NiCrZr and NiTa seed layers. The grain size distribution of the magnetic layer is also reduced by the surface oxidization of the seed layer. This also contributes to improvements in read/write performance of the media

Published in:

IEEE Transactions on Magnetics  (Volume:37 ,  Issue: 4 )