PHASE DIAGRAM OF THE Tl2Te–Tl9TbTe6 SYSTEM
The phase equilibria in the Tl2Te–Tl9TbTe6 system were investigated by using DTA, XRD, SEM-EDS technique and microhardness measurements. The phase diagram of the system as well as concentration dependence of the unit cell parameters and microhardness were constructed. It was established that the system is characterized by formation of the wide fields of solid solutions with Tl5Te3-type structure. However, the system is non-quasi-binary due to the peritectic melting of the Tl9TbTe6 compound.
Keywords : thallium-terbium tellurides, phase equilibria, solid solutions, crystal structure
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