ON THE FORMATION OF LNCEO-Y LN=ND, PR, SM, EU) SOLID-SOLUTIONS

被引：7

作者：

JARDIM, RF

MAPLE, MB

机构：

[1] UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,LA JOLLA,CA 92093

[2] UNIV SAO PAULO,INST FIS,BR-01498 SAO PAULO,BRAZIL

来源：

MATERIALS LETTERS | 1993年 / 18卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/0167-577X(93)90046-Z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid solutions of LnCeO(y) (Ln=Nd, Pr, Sm, Eu) sintered at temperatures up to 1400 degrees C were studied by X-ray diffractometry. The CeO2 fluorite-type structure is retained for all substitutions up to 50 at% of Ln. The width of the solid solutions increases with increasing sintering temperature for all Ln substitutions up to 1400 degrees C. While the lattice parameter a decreases slightly for Pr, which is consistent with the presence of Pr4+, an increase of alpha for Ln=Nd, Sm, and Eu substitutions was observed, in agreement ment with Ln(3+) substitution. Polycrystalline samples of Ln(1.85)Ce(0.15)CuO(4-y), which contain a significant amount of these solid solutions, are believed to have an appreciable cation nonstoichiometry.

引用

页码：5 / 10

页数：6

共 19 条

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