Evidence for the first misfit layer oxide Tl-0.41(Sr0.9O)(1.12)CoO2

被引：62

作者：

Boullay, P

Domenges, B

Hervieu, M

Groult, D

Raveau, B

机构：

[1] ISMRA UNIV,LAB CRISMAT,URA 1318 CNRS,F-14050 CAEN,FRANCE

[2] UNIV CAEN,F-14050 CAEN,FRANCE

来源：

CHEMISTRY OF MATERIALS | 1996年 / 8卷 / 07期

关键词：

D O I：

10.1021/cm9601446

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：

A misfit layer oxide Tl-0.41(Sr0.9O)(1.12)CoO2 has been synthesized, and its structural model established by ED and HREM. The cell parameters of the two subsystems have been refined from XRPD data. The subsystem S-1 (a = 4.9498(5) Angstrom, b(1) = 5.0222(6) Angstrom, c = 11.658(1) Angstrom, beta = 97.755(7)degrees) characterizes the strontium-deficient rock-salt layers [(Sr(0.9)rectangle 0.1)O](infinity), whereas the subsystem S-2 (a = 4.9498(5) Angstrom, b(2) = 2.807(2) Angstrom, c = 11.656(1) Angstrom, beta = 97.755(7)degrees) corresponds to the octahedral [CoO2](infinity) layers that exhibit the CdI2 structure. The thallium atoms are located between the two kinds of layers, with a distorded tetrahedral coordination, ensuring the cohesion of the structure.

引用

页码：1482 / 1489

页数：8

共 14 条

[1]

CONTANCEAU M, 1995, SOLID STATE COMMUN, V96, P569

[2] NEW OXYGENATED BRONZES OF FORMULA NA(X)COO2 (X LESS-THAN-OR-EQUAL-TO ONE) - COBALT-OXYGEN-SODIUM SYSTEM [J].