X-ray diffraction study of the NaF-LiF-NdF3 eutectic in the liquid and solid states

Physical Properties of Liquid Eutectic Ionic Systems NaF−LaF3 and NaF−NdF3

“…The temperature dependences of the viscosity, electric conductivity, and thermoelectric power in binary ionic liquid systems NaF-LaF 3 and NaF-NdF 3 have been studied in a wide temperature interval including the melting temperatures of indicated specimens with the eutectic compositions. The heterogeneous ionic liquid system NaF-LaF 3 is demonstrated to become a homogeneous ionic solution at temperatures that exceed the corresponding melting temperature by about 130 K. The same effect is observed for the heterogeneous ionic liquid system NaF-NdF 3 at a temperature that exceeds the melting temperature by about 150 K. The both results agree with the results of x-ray diffraction researches for the indicated melts [15]. A comparison is made between the physical properties of the examined binary ionic liquid systems NaF-LaF 3 and NaF-NdF 3 and the corresponding properties of their ternary analogues formed by addiing LiF to the initial binary systems.…”

Physicochemical Properties of Nonvariant Compositions of Ternary NaF-LiF-LnF3 Systems (Ln = La, Nd)

“…According to the high-temperature X-Ray diffraction the molten eutectic ternary system NaF-LiF-NdF 3 are the structural heterogeneity and composed of a mixture of micro grouping different cationic composition in which fluoride anions do not form a homogeneous matrix (5). Obtained in the investigation of the partial pair distribution functions G ij (R) and obtained the coordination numbers (CNs) Z i(j) that, in the temperature range 650-800 °C the correlation between the cation positions in all of the pairs except Na-F, Li-F, and Nd-F, is limited to the nearest neighbor environment as in the system NaF-LiF-LaF 3 .…”