Structure and luminescence properties of some new AgLnW(2)O(8) compounds

被引：24

作者：

Shi, FN ^{[1
]}

Meng, J ^{[1
]}

Ren, YF ^{[1
]}

Su, Q ^{[1
]}

机构：

[1] CHINESE ACAD SCI,CHANGCHUN INST APPL CHEM,LAB RARE EARTH CHEM & PHYS,CHANGCHUN 130022,PEOPLES R CHINA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1997年 / 7卷 / 05期

关键词：

D O I：

10.1039/a607241k

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：

Three new compounds, AgLnW(2)O(8) (Ln(3+)=Eu, Gd or Tb), have been prepared by a solid-state reaction and crystallize with a scheelite-related monoclinic symmetry. Their IR spectra show absorption transitions in the region 1000-400 cm(-1) similar to KLnW(2)O(8). Broad excitation and emission bands of the tungstate group with a large Stokes shift (12573 cm(-1)) are observed in AgGdW2O8. Excitation and emission spectra of AgLnW(2)O(8) (Ln=Eu or Tb) show that energy transfer from tungstate to Eu and Tb occurs and that Eu3+ ions occupy a unique crystallographic site with C-2 site symmetry.

引用

页码：773 / 776

页数：4

共 13 条

[1] RARE-EARTH TUNGSTATES AND 1 1 OXYTUNGSTATES [J].