By Topic

Magnetic Properties of (Ni _{83} Fe _{17} ) _{1 - {\rm x}} -Gd _{\rm x} Thin Films with Diluted Gd Doping

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

11 Author(s)
Y. Fu ; Dept. of Phys., Southeast Univ., Nanjing, China ; L. Sun ; J. S. Wang ; X. J. Bai
more authors

(Ni83Fe17)1-x-Gdx thin films (30 nm) are deposited by sputtering at room temperature and studied using X-ray diffraction, vibrating sample magnetometer, and ferromagnetic resonance (FMR). The film structure changes from polycrystalline to amorphous when Gd content is around 5.7%. The magnetization is reduced almost linearly with the increase of the Gd content, while the high hysteresis squareness along the in-plane easy-axis, the low coercivity Hc of less than 10 Oe, and the high maximum permeability of around 1000 are all preserved. Theoretical fitting of angular dependences of FMR field yields the second and forth order perpendicular anisotropy constants Kperp1 and Kperp2 which show a spin reorientation with increasing Gd doping. The FMR linewidth is fitted by considering the contributions from Gilbert damping and inhomogeneous broadening. It is found that the damping coefficient alpha is tripled along with an enhancement of the gyromagnetic ratio gamma when the Gd content rises to 9.3%.

Published in:

IEEE Transactions on Magnetics  (Volume:45 ,  Issue: 10 )