Abstract:
The Se-TlPrSe3 system has been studied using differential thermal analysis, X-ray diffraction, microstructural analysis, microhardness tests, and density measurements, and its phase diagram has been constructed. The Se-TlPrSe3 system is shown to be partially nonpseudobinary. The system contains alpha-TlPrSe3-based solid solutions with a boundary at 8 mol % Se. The Se solubility in TlPrSe3 is insignificant. alpha-TlPrSe3 has a tetragonal structure with lattice parameters a = 8.87 and c = 7.96 (rho(meas) = 7.36 g/cm(3), and rho(x) = 7.71 g/cm(3)).
