By Topic

Granular L10 FePt–X (X=C, TiO2, Ta2O5) (001) nanocomposite films with small grain size for high density magnetic 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
$31 $31
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

6 Author(s)
Chen, J.S. ; Department of Materials Science & Engineering, National University of Singapore, Singapore 117576, Singapore ; Lim, B.C. ; Ding, Y.F. ; Hu, J.F.
more authors

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3057874 

FePt–X (X=C, TiO2, Ta2O5) nanocomposite films were deposited on MgO/CrRu/glass substrates at 350 °C by magnetron cosputtering. The comparison investigations on the magnetic properties and microstructure of FePt–X films with various dopants were conducted. All FePt–X films showed (001) preferred orientation and oxide dopants promoted the formation of magnetically soft fcc FePt phase. With 15 vol % C doping, FePt–C film with columnar grains of 7.5 nm was obtained and the out-of-plane coercivity measured at room temperature was as high as 14.4 kOe. The increase in carbon volume fraction to 20% caused the formation of two-layer structure, whereas for the 20 vol % TiO2 and Ta2O5 doping, the columnar structure of the FePt films remained and the corresponding grain sizes were 5 and 10 nm, respectively. Ta2O5 doping showed better grain isolation than the others. The out-of-plane coercivities of FePtTiO2 and FePtTa2O- 5 films were 7.5 and 8.8 kOe, respectively.

Published in:

Journal of Applied Physics  (Volume:105 ,  Issue: 7 )