Mixing small amount of the magnetic transition metal or rare earth metal ions in the non-magnetic semiconductor makes it show a certain degree of magnetism

forming the diluted magnetic semiconductors (DMS). The introduction of one of the magnetic atoms

as known magnetic impurities

into the matrix as known the non-magnetic semiconductor. In this paper based on Zener model

considering the impact of the anti-ferromagnetic exchange on the Curie temperature of DMS materials

we got the function of the doping concentration and anti-ferromagnetic exchange about Curie temperature (

T

c

). A detailed analysis on the Curie temperature of(GaAS ∶

TM)(TM

=Sc

Ti

V

Cr

Mn

Fe

Co

Ni) was carried out. A conclusion was drawn from the analysis. It follows: when

x＜x

0

T

c

increases with

x

; when

x=x

0

T

c

reaches maxima; when

x＞x

0

T

c

always decreases with

x

increa-sing. At the same time the critical doping concentration

x

0

decreases gradually with

y

and Curie temperature

T

c

always is lower.For n-type doping cases

T

c

is no longers a monotone function for the

x

there is a maximum value only

however

for the p-type doping

T

c

displays a monotonous increase.