A NEW LAYERED STRUCTURE-BASED ON PEROVSKITE IN THE SRO-LA2O3-TIO2 SYSTEM

被引：4

作者：

BOWDEN, ME ^{[1
]}

JEFFERSON, DA ^{[1
]}

BROWN, IWM ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, DEPT CHEM, CAMBRIDGE CB2 1EW, ENGLAND

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 119卷 / 02期

关键词：

D O I：

10.1016/0022-4596(95)80060-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new compound, Sr3La2Ti2O10, has been prepared and characterized by a combination of X-ray diffraction and high-resolution electron microscopy, It is monoclinic (space group P2(1)/m, a = 6.9159(3) Angstrom, b = 5.5252(2) Angstrom, c = 12.2953(7) Angstrom, and beta = 85.443(4)degrees) and refinement of metal positions has been carried out using Rietveld analysis. The structure contains corner-sharing TiO6 octahedra like those in perovskite, but arranged in ribbons separated by rock-salt layers of Sr/La atoms. The ribbons are one octahedron high and four octahedra wide; efforts to prepare compounds with different widths resulted in mixed layer intergrowths. This new structure may be part of a wider family containing essentially one-dimensional elements of perovskite of special interest to high-temperature superconductivity. (C) 1995 Academic Press, Inc.

引用

页码：412 / 419

页数：8

共 6 条

[1] DETERMINATION OF LAYER STRUCTURE IN SR1-XLAXTIO3+0.5X (0-LESS-THAN-X-LESS-THAN-1) COMPOUNDS BY HIGH-RESOLUTION ELECTRON-MICROSCOPY [J].