Correlation between the Fluorine Ion Conductivities of Sr1- xRxF2+ x (CaF2 Type) and R1- ySryF3- y (LaF3 Type) Crystals in the SrF2-RF3 Systems (R = La-Nd)

被引：6
作者：
Sorokin, N. I. [1 ]
Sobolev, B. P. [1 ]
机构：
[1] Russian Acad Sci, Shubnikov Inst Crystallog, Fed Res Ctr Crystallog & Photon, Moscow 119333, Russia
来源：
PHYSICS OF THE SOLID STATE | 2019年 / 61卷 / 11期
关键词：
fluorides; single crystals; rare-earth elements; ionic conductivity; superionic conductors; SINGLE-CRYSTALS; SOLID-SOLUTIONS; NANOSTRUCTURED CRYSTALS; ANIONIC CONDUCTIVITY; PHASES; TRANSPORT; LU; NONSTOICHIOMETRY; SR1-XLAXF2+X; ELECTROLYTES;
D O I：
10.1134/S1063783419110350
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The "conductivity logarithm-composition" correlation log sigma (dc)(x) = ax + b has been revealed for the strongly nonstoichiometric fluorite Sr1 - xRxF2 + (x) (x is the RF3 molar fraction, 0.15 <= x <= 0.47) and tysonite R1 - ySryF3 - (y) (y is the SrF2 molar fraction, y = 1 - x, 0.85 <= x <= 0.97) phases in the SrF2-RF3 systems (R = La, Ce, Pr, Nd). The conductivity sigma (dc) of the eutectic 70LaF(3) + 30SrF(2) (mol %) composite fits well with the dependence log sigma (dc)(x) for the nonstoichiometric Sr1 - xLaxF2 + (x) and La1 - ySryF3 - (y) phases.
引用
收藏
页码：2034 / 2040
页数：7
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