Magnetic circular dichroism and absorption study of photochromism in Mn-doped Bi12GeO20

被引：4

作者：

Ramaz, F

Hamri, A

Briat, B

Topa, V

Mitroaica, G

机构：

[1] ECOLE SUPER PHYS & CHIM IND VILLE PARIS, LAB OPT PHYS, F-75231 PARIS 05, FRANCE

[2] INST PHYS & TECHNOL MAT, R-76900 BUCHAREST, MAGURELE, ROMANIA

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1995年 / 136卷 / 1-4期

关键词：

D O I：

10.1080/10420159508218800

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We report on the first simultaneaous investigation of the behavior of ligand field and charge transfer bands in doped Bi12GeO20 (BGO) under various illumination and thermal conditions. This was made possible through MCD measurements in both the near IR and the visible spectral regions. The [MnO4](3-) ion is clearly identified in the thermally bleached state. Illumination with blue light leads to the reduction of Mn5+ while the antisite (Bi-Ge(3+) + h) defect is formed. Finally EGO is an interesting host for the popular d(2) ions in a tetrahedral site.

引用

页码：99 / 102

页数：4

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