The phase diagram of the GeSe2 PbTe system is studied by means of X-ray diffraction, differential thermal analysis and measurements of the microhardness and the density of the material. The unit-cell parameters of the intermediate phase -GeSe2*(2-x)PbTe, (x = 0/1) were determined: a = 6.200 Adeg , b = 3.807 Adeg , and c = 3.645 Adeg , alpha = 106.47deg, beta = 99.85deg, and gamma = 87.22deg. The intermediate phase -GeSe2*PbTe receives a peritectic reaction at 425 .C. This phase has variable composition GeSe2*(2-x)PbTe (x = 0/1), it melts congruently at 425 C and stands polymorphic transition at T = 325 .C, which dependents of the composition (x). The existence of a narrow regions of solid solutions based on PbTe is supposed.
Compounds
#
Formula
Name
1
GeSe2
germanium diselenide
2
PbTe
lead monotelluride
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.