Transport Properties of Aliovalent Substitution Solid Solutions of the System (1-x)PbF2-x YF3-SnF2

4th International Conference on Competitive Materials and Technology Processes

Pogorenko, Y.V.^1 ; Pshenychnyi, R.M.^1 ; Lutsyk, V.I.^2,3 ; Omel'Chuk, A.O.^1

Vernadskii Institute of General and Inorganic Chemistry of the Ukrainian NAS, Kyiv

03680, Ukraine^1

Institute of Physical Materials Science, SB RAS, Ulan-Ude

670047, Russia^2

Chemical Department, Buryat State University, Ulan-Ude

670000, Russia^3

关键词: Aliovalent substitution;    Conducting electrolyte;    Electronic component;    Heterovalent substitution;    Orders of magnitude;    Polycrystalline solid;    Transport number;    Yttrium fluoride;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/175/1/012039/pdf
DOI  :  10.1088/1757-899X/175/1/012039

来源: IOP

【 摘 要 】

In polycrystalline solid solution of Pb1-xYxSnF4+x(0 4in temperature 293 - 523 K the fluorine anions occupy three structurally nonequivalent positions which differ in the local environment and mobility. The concentration of mobility fluoride anions at 300 K is almost independent of the content of heterovalent substituent on YF3and at temperatures above 430 K increases with grow concentration of the YF3. Fluoride ion exchange between nonequivalent subsystems increases with raising temperature, which causes an increase in conductivity. The electronic component of conductivity the synthesized samples by 2 orders of magnitude lower than the ion.