MAGNETIC CIRCULAR-DICHROISM AND ABSORPTION STUDY OF PHOTOCHROMISM IN MN-DOPED BI12GEO20

Authors
RAMAZ F HAMRI A BRIAT B TOPA V MITROAICA G
Citation
F. Ramaz et al., MAGNETIC CIRCULAR-DICHROISM AND ABSORPTION STUDY OF PHOTOCHROMISM IN MN-DOPED BI12GEO20, Radiation effects and defects in solids, 136(1-4), 1995, pp. 1009-1012
Citations number
18
Categorie Soggetti
Physics, Condensed Matter","Nuclear Sciences & Tecnology
Journal title
Radiation effects and defects in solids → ACNP
ISSN journal
10420150
Volume
136
Issue
1-4
Year of publication
1995
Pages
1009 - 1012
Database
ISI
SICI code
1042-0150(1995)136:1-4<1009:MCAASO>2.0.ZU;2-U
Abstract
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 th rough MCD measurements in both the near IR and the visible spectral re gions. The [MnO4](3-) ion is clearly identified in the thermally bleac hed state. Illumination with blue light leads to the reduction of Mn5 while the antisite (Bi-Ge(3+) + h) defect is formed. Finally EGO is a n interesting host for the popular d(2) ions in a tetrahedral site.