A study on the mechanism of the abnormal reduction of Eu3+ → Eu2+ in Sr2B5O9Cl prepared in air at high temperature

被引：74

作者：

Pei, Z ^{[1
]}

Zeng, Q ^{[1
]}

Su, Q ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Jilin, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1999年 / 145卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1006/jssc.1999.8246

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This paper reports a new observation of the abnormal reduction of Eu3+ --> Eu2+ in Sr2B5O9Cl when prepared in air at high temperature. A model based on the nature of substitution defects is proposed to explain this abnormal reduction. Electrons, which reduced the Eu3+ ions, are created by the substitution of cations first and then transferred to the target Eu3+ ions via tetrahedral berate anion groups. Codoping experiments are designed and performed. The results of these experiments support the model proposed. (C) 1999 Academic Press.

引用

页码：212 / 215

页数：4

共 7 条

[1] ALKALINE EARTH ALUMINUM FLUORIDE COMPOUNDS WITH EU+2 ACTIVATION [J].