By Topic

A1 to L1 _{0} Transformation in FePt Films With Ternary Alloying Additions of Ag and Au

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)
B. Wang $^{1}$Department of Materials Science and Engineering, and the Data Storage Systems Center,, Carnegie Mellon University,, Pittsburgh,, PA, USA ; K. Barmak ; T. J. Klemmer

The formation of the ordered L10 phase from the parent A1 (face centered cubic, fcc) solid solution phase in ternary FeAgPt (1.5-16.7 at.% Ag) and FeAuPt (1.9-13.8 at.% Au) films has been studied. The films were co-sputter deposited from elemental targets at room temperature and annealed after deposition. The annealed films showed the presence of fcc Ag peaks for concentrations of 6.9 at.% Ag and higher and fcc Au diffraction peaks for concentration of 7.2 at.% Au and higher. Therefore, these two elements are not fully soluble in L10 FePt. The kinetic ordering temperature is higher in both types of ternary films when compared with binary FePt. However, the activation energy for ordering is higher only for high concentrations of Au. The enthalpy for decomposition of FeAgPt and FeAuPt into L10 FePt and Ag or Au is not measurably different than that for transformation of the A1 phase to the L10 phase in binary FePt. Ternary additions of Ag and Au have no impact on the Curie temperature of the L10 phase.

Published in:

IEEE Transactions on Magnetics  (Volume:46 ,  Issue: 6 )