Abstract
We investigate the structural, transport, and magnetic behaviors of (Zn,Cr)Te system without additional carrier doping grown by low temperature molecular-beam epitaxy on GaAs (100) substrates. For the growth of
Zn
1
−
x
Cr
x
Te
with
x
=
0.14
, high-resolution transmission electron microscopy shows the possibility of zinc-blende (ZB)-CrTe phase being embedded in the
Zn
1
−
x
Cr
x
Te
matrix. Our detailed analysis of the magnetization results in
Zn
0.86
Cr
0.14
Te
using scaling theory and modified Arrott plots suggests that the ferromagnetic ordering cannot be described by mean-field theory. Additionally, the resistivity behavior indicates that ZB-CrTe clusters could possibly provide a percolative conduction path that gives rise to high Curie temperature. We discussed the ferromagnetism in (Zn,Cr)Te system on the basis of clustering effect.