ELECTRICAL-CONDUCTIVITY OF MIXED LEAD HALIDES PBCL2XBR2(1-X)

被引：7

作者：

LUMBRERAS, M

SCHRAM, J

SCHOONMAN, J

SCHOULER, EJL

机构：

[1] DELFT UNIV TECHNOL,INORGAN & PHYS CHEM LAB,2600 GA DELFT,NETHERLANDS

[2] LAB ION & ELECTROCHEM SOLIDE,F-38402 ST MARTIN HERES,FRANCE

来源：

SOLID STATE IONICS | 1988年 / 28卷

关键词：

Electric Conductivity--Anisotropy - Electric Measurements--Impedance - Ions--Diffusion - Lead Compounds--Ionic Conduction - Mathematical Techniques--Curve Fitting;

D O I：

10.1016/0167-2738(88)90376-1

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 small-signal ac response of PbCl2xBr2(1-x) solid solution crystals has been studied as a function of temperature, crystallographic axes, and composition (0&lex&le1) over a wide range of frequencies. The frequency dispersion has been analyzed using a computer program for nonlinear least-squares fitting to complex data. The data can be fitted to one type of equivalent circuit for all crystallographic axes and studied temperatures. The composition and structural depencence of bulk ionic conductivity parameters have been analyzed in detail. The intrinsic conductivity reveals the formation enthalpy of the Schottky defects to be orientation-invariant. Transference number measurements indicate Br- ions to be immobile in PbCl1.98Br0.02 and Cl- ions to be mobile in PbCl0.02Br1.98.

引用

页码：1305 / 1309

页数：5

共 8 条

[1]

HALFF AF, 1978, THESIS U UTRECHT

[2] CRYSTAL-GROWTH AND CHARACTERIZATION OF MIXED LEAD HALIDES PBCL2XBR2(1-X) [J].