Microdeformations of the crystal lattice of PbTe$_{1-x}$Br$_x$ solid solutions

Microdeformations of the crystal lattice of PbTe$_{1-x}$Br$_x$ solid solutions depending on the bromine content are determined by analysis of the physical broadening of X-ray reflections. It is found that they increase with the introduction of bromine from 0.188% (for undoped PbTe) to 0.283% for PbTe$_{1-x}$Br$_x$ at $x$ = 0.02. The microstrains remain constant with a further increase in the bromine content.