CRYSTAL-CHEMISTRY OF LN'LN''BA2CU2TI2O11 (LN=LANTHANIDE,Y) MATERIALS

被引：23

作者：

GREENWOOD, KB

SARJEANT, GM

POEPPELMEIER, KR

SALVADOR, PA

MASON, TO

DABROWSKI, B

ROGACKI, K

CHEN, Z

机构：

[1] NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208

[2] NORTHWESTERN UNIV,SCI & TECHNOL CTR SUPERCONDUCT,EVANSTON,IL 60208

[3] NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208

[4] NO ILLINOIS UNIV,DEPT PHYS,DE KALB,IL 60115

[5] NO ILLINOIS UNIV,SCI & TECHNOL CTR SUPERCONDUCT,DE KALB,IL 60115

来源：

CHEMISTRY OF MATERIALS | 1995年 / 7卷 / 07期

关键词：

D O I：

10.1021/cm00055a013

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 stabilization of the quadruple perovskite structure Ln(2)Ba(2)Cu(2)Ti(2)O(1)1 as a function of the constituent lanthanides has been investigated. Powder X-ray data show that the mixed A-site compositions Ln'Ln '' Ba2Cu2Ti2O11 (Ln'Ln '' = LaY, LaHo, LaEr, and NdDy) concertedly order to form distinct CuO22- and TiO2 double layers. In addition the A cations (Ln, Ln '', and Ba) order on three distinct sites, with the smaller lanthanide (Ln '') occupying the 8-coordinate site between contracted copper-oxygen planes.

引用

页码：1355 / 1360

页数：6

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