CRYSTAL-STRUCTURE OF THE HIGH-TEMPERATURE PROTONIC CONDUCTOR SRCEO3

被引：34

作者：

RANLOV, J ^{[1
]}

NIELSEN, K ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT CHEM B,DK-2800 LYNGBY,DENMARK

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1994年 / 4卷 / 06期

关键词：

D O I：

10.1039/jm9940400867

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 crystal structure of the perovskite-like high-temperature protonic conductor SrCeO3 has been studied with single-crystal and powder X-ray diffraction. SrCeO3 crystallizes in the orthorhombic space group Pbnm, Z=4, with the unit-cell parameters a = 6.0117(4) angstrom, b = 6.1538(5) angstrom and c = 8.5886(9) angstrom. The structure was refined to a weighted R value of 0.0226 for the single-crystal data. The oxygen coordination around cerium is almost perfectly octahedral, whereas the SrO12 polyhedra are rather distorted. SrCeO3 is isostructural with another high-temperature protonic conductor, BaCeO3, but displays an appreciably higher degree of lattice distortion.

引用

页码：867 / 868

页数：2

共 14 条

[1] OXIDE ION CONDUCTION IN YTTERBIUM-DOPED STRONTIUM CERATE [J].