INVESTIGATIONS OF CATION ORDER IN ND-BETA, GD-BETA AND EU-BETA'' ALUMINA USING HIGH-RESOLUTION TEM

被引：18

作者：

DAVIES, PK ^{[1
]}

PETFORD, A ^{[1
]}

OKEEFFE, M ^{[1
]}

机构：

[1] ARIZONA STATE UNIV,DEPT CHEM,TEMPE,AZ 85287

来源：

SOLID STATE IONICS | 1986年 / 18-9卷 / pt 2期

关键词：

MICROSCOPES; ELECTRON - Applications - SOLIDS - Ionic Conduction;

D O I：

10.1016/0167-2738(86)90231-6

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 microstructural cation arrangement in trivalent beta double prime aluminas have been studied by high resolution TEM (transient electron microscopy). All samples were found to show considerable structural inhomogeneity. A long-range ordered structure with a 3 multiplied by 3 multiplied by 3 superstructure was found in Nd, Gd and Eu samples. A second apparently 'disordered' structure type was also observed in all samples. The ratio of the ordered to disordered structure increased in the order Nd greater than Eu greater than Gd. We suggest that thermal treatments are important in determining the structure of these materials.

引用

页码：624 / 630

页数：7

共 6 条

[1] STOICHIOMETRY FLUCTUATIONS IN DIVALENT RICH BETA-ALUMINA AND BETA''-ALUMINA [J].