  In this article, we examine the structure and the electronic, optical, and
magnetic properties of ZnTe before and after doping with the transition metal
Mn. The ab initio calculations of this compound were performed using the full
potential linearized extended full potential planar waveform (FP-LAPW) in the
context of density functional theory (DFT) implemented in the Wien2K code. The
potential for exchange and correlation was addressed by the generalized
gradient approximation (GGA) approximation. The electronic properties show that
the ZnTe material exhibits semiconductor behavior before doping. As a result,
it becomes semimetal after doping. The findings attained by Monte Carlo
simulations display that the ZnMnTe material goes from an antiferromagnetic
phase to the paramagnetic phase at the Neel temperature value TN =159.31 K.
