PREPARATION OF LA2ZR2O7 BY SOL-GEL ROUTE

被引：58

作者：

KIDO, H

KOMARNENI, S

ROY, R

机构：

[1] Materials Research Laboratory, Pennsylvania State University, University Park, Pennsylvania

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 02期

关键词：

SOL-GELS; LANTHANUM; ZIRCONATE; PYROCHLORE; FLUORITE;

D O I：

10.1111/j.1151-2916.1991.tb06899.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The La2Zr2O7 phase was prepared from metal acetylacetonates by a sol-gel route without any intermediate phase formation. X-ray peaks appeared at a temperature as low as 500-degrees-C at the positions expected for La2Zr2O7, although they were broad. The crystal structure of La2Zr2O7 was found to be of the fluorite type below 900-degrees-C and of the pyrochlore type above 1000-degrees-C. The substitution of a small amount of Eu for La was carried out to investigate the crystal structure from the viewpoint of fluorescence, and these results confirmed the formation of fluorite type La2Zr2O7 below 900-degrees-C.

引用

页码：422 / 424

页数：3

共 7 条

[1] ELECTRICAL AND CATALYTIC PROPERTIES OF SOME OXIDES WITH THE FLUORITE OR PYROCHLORE STRUCTURE - CO OXIDATION ON SOME COMPOUNDS DERIVED FROM GD2ZR2O7 [J].