Phase Diagram and Thermodynamic and Transport Properties of the DyBr3-LiBr Binary System

Abstract

The phase diagram of the DyBr 3 -LiBr binary system was derived from DSC measurements. It exhibits two eutectics and has two stoichiometric compounds. The first compound, Li 3 DyBr 6 , melts congruently at 803 K. The second one, Li 6 DyBr 9 decomposes in the solid state at 656 K. The composition of the two eutectic mixtures, x(DyBr 3 ) = 0.156 and 0.321, respectively, was determined by the Tamman method. The respective eutectic temperatures are 787 and 791 K. The electrical conductivity of Li 3 DyBr 6 compound was measured in the liquid and solid phase. It was found to be a solid electrolyte with a high electrical conductivity at around room temperature. Some additional electrical conductivity measurements performed on solid samples confirmed the existence of Li 6 DyBr 9 .

Thermodynamic properties of the NdBr3–MBr binary systems (M = Na, K)

“…These investigations are part of our general research program targeted at determination of unknown and verification of existing phase diagrams of lanthanide halide-alkali metal halide systems. Previously, we reported the results of investigations concerning the phase diagrams of the CeBr 3 -MBr (M = alkali metal) [24][25][26][27][28], PrBr 3 -MBr [29][30][31][32], TbBr 3 -MBr [33][34][35] and DyBr 3 -MBr [36][37][38][39] binary systems. The present paper is a continuation of this ongoing extensive program.…”