Determination of charge carried concentration in Sr1-xBixF2+x solid solution from ac conductivity analysis

被引：9

作者：

Hairetdinov, EF

Uvarov, NF

Wahbib, M

Reau, JM

Jun, XY

Hagenmuller, P

机构：

[1] UNIV CADI AYYAD,FAC SCI,LAB CHIM SOLIDE MINERAL,MARRAKECH,MOROCCO

[2] INST CHIM MAT CONDENSEE BORDEAUX,F-33608 PESSAC,FRANCE

来源：

SOLID STATE IONICS | 1996年 / 86-8卷

关键词：

fluorite; clustering; F- ion conductivity;

D O I：

10.1016/0167-2738(96)00103-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The bulk impedance parameters of polycrystalline samples of the Sr1-xBixF2+x (0 less than or equal to x less than or similar to 0.50) solid solution with fluorite-type structure were determined from an analysis of ac conductivity data, using a modified Almond-West model. Hopping rates of mobile F- ions were extracted from frequency dependences of conductivity at different temperatures. The fraction of charge carriers (per unit cell) in the samples investigated has been estimated. The nature of charge carriers has been identified on the basis of the clustering process model and neutron diffraction data: the interstitial ions of F' type appear as responsible for long range motions in Sr1-xBixF2+x.

引用

收藏

页码：113 / 117

页数：5

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