Ion mobility and transport in β-PbF2 doped with alkaline-earth fluorides

被引：7
|
作者：
Kavun, V. Ya.
Slobodyuk, A. B.
Tararako, E. A.
Goncharuk, V. K.
Uvarov, N. F.
Sergienko, V. I.
机构：
[1] Russian Acad Sci, Inst Chem, Far E Div, Vladivostok 690022, Russia
[2] Russian Acad Sci, Inst Solid State Chem & Mechanochem, Siberian Div, Novosibirsk 630128, Russia
来源：
INORGANIC MATERIALS | 2007年 / 43卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S002016850703017X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have studied ion mobility and conduction in ( 1 - x) PbF2 center dot x MF2 (M = Mg2+, Ca2+, Sr2+, Ba2+; 0.05 <= x <= 0.1) solid solutions by F-19 and Pb-207 NMR and impedance spectroscopy. The results are used to analyze the factors governing the structure of the fluoride sublattice and the nature and energetics of ionic motion in the temperature range 170 - 550 K. The solid solutions are shown to have high ionic conductivity (similar to 10(-4) to 10(-3) S/cm at temperatures above 470 K, with activation energies E-a <= 0.3 - 0.6 eV) and are, therefore, potentially attractive for engineering materials with tailored electrical properties.
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页码：301 / 309
页数：9
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