Abstract
A small anomalous Hall effect signal of a
Zn
1
−
x
Co
x
O
(
x
=
0.05
)
thin film was observed, indicating that there presents
s
p
-
d
interactions in the
Zn
1
−
x
Co
x
O
thin film. However, under a self-held setup, we did not obtain observable differences between the
M
-
H
curves when the near band electrons were changed. Integrated with our previous results, possible mechanisms for the magnetism of
Zn
1
−
x
Co
x
O
thin films were proposed based on a picture of spins in a carrier sea.