Cart (Loading....) | Create Account
Close category search window

Effects of Cr and SiN contents on the microstructure and magnetic grain interactions of nanocomposite FePtCr-SiN thin films

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 $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)
Chen, S.C. ; Dept. of Mech. Eng., De Lin Inst. of Technol., Taipei, Taiwan ; Kuo, P.C. ; Sun, A.C. ; Lie, C.T.
more authors

We have fabricated granular nanocomposite [(FePt)100-x-Crx]100-δ-(SiN)δ thin films with x=0-25 at.% and δ=0-30 vol.% on natural-oxidized silicon substrate by dc and radio-frequency magnetron cosputtering of FePt, Cr, and Si3N4 targets. We annealed the as-deposited film in vacuum at 600°C and then quenched it with ice water in order to transform the soft magnetic face-centered cubic γ-FePt phase to the hard magnetic face-centered tetragonal γ1-FePt phase (L10 phase). Transmission electron microscopy observation indicated that Cr and SiN can restrain the grain growth of magnetic grains, and that the structure of the film is a nonmagnetic SiN matrix with FePtCr particles dispersed in it. Average grain size of the magnetic particles decreased as Cr or SiN content increased. Energy dispersed spectrum (EDS) analysis showed that Cr exists mainly in the grain surface area (between the grain boundary and the inner grain) of the magnetic grains. The magnetic grains are isolated by SiN and magnetic grain interactions are reduced as Cr or SiN content is increased. Increasing the SiN volume fraction increases the thermal stability of the film. We found the [(FePt)90-Cr10]85-(SiN)15 film, annealed at 600°C for 30 min, is suitable for high-density magnetic recording. Average grain size of the FePtCr in this film is about 9.5 nm. Its in-plane coercivity Hc// is 3.7 kOe, saturation magnetization Ms is 450 emu/cm3, and in-plane squareness S// is about 0.75.

Published in:

Magnetics, IEEE Transactions on  (Volume:39 ,  Issue: 1 )

Date of Publication:

Jan 2003

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.