J. Li et al. / Journal of Alloys and Compounds 477 (2009) 547–551
551
in Table 2. From Fig. 7 and Table 2, it is found that the values of
amorphous films should be due to the competing contributions
from several factors, such as spin–orbit coupling, stress, etc.
⊥
⊥
H
are greater than H , and the values of S are less than that
c
c
|
|
of S , which means that there exists a clear anisotropy, and easy
magnetization direction is along in the plane of the film. Further-
Acknowledgements
⊥
more, it is observed that the values of Hc and H for Sm–Fe alloys
c
increase evidently with increasing Sm content. However, the val-
ues of Hc and Hc for Gd–Co and La–Ni alloys change gently. Also,
the remanence ratio S displays a strong RE content dependence.
The authors would like to thank Prof. Z. Chen (Experiment Cen-
ter, Fujian Normal University) and Dr. X.P. Wu (Department of
Chemistry, Fuzhou University) for experiments. This work was sup-
ported by NSF of China under Grant No. 60676055, NSF of Fujian
Province (A0510013) and National Key Project for Basic Research of
China (No. 2005CB623605).
⊥
⊥
With increasing RE content, the values of S increase evidently
|
|
and those of S decrease obviously, which means that the mag-
netic anisotropy decreases obviously. The magnetic anisotropy in
RE–TM amorphous films should be due to the competing contribu-
tions from several factors, such as spin–orbit coupling, stress, etc.
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1
. It is also found that, for the as-deposited RE–TM films prepared
⊥
by urea melt, the values of Hc are greater than those of H , and
c
⊥
||
the values of S are less than those of S , which means that there
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