Electron diffraction study of the phase formation of Tl–Fe–Se and kinetics of phase transformations of films TlFeSe$_2$

The conditions of phase formation in the Tl–Fe–Se system and the crystallization kinetics of amorphous TlFeSe$_2$ films are investigated by electron-diffraction structural analysis and kinematic electronography. It is shown that the crystallization of amorphous TlFeSe$_2$ films is described by the analytical expression of kinetic phase-transformation curves $V_t=V_0[1-\exp(kt^m)]$. The growth dimensionality during the crystallization of amorphous TlFeSe$_2$ equal to three and the activation energies of nucleation and crystal growth are determined.