Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10638482 | Materials Chemistry and Physics | 2005 | 6 Pages |
Abstract
Compositional influences on the spectroscopic properties of Yb3+ and the structural variations with the introduction of YbF3 were studied in fluorophosphate glasses. Emission cross-section (Ïemi) and gain coefficient (Ïemi Ã Ïf) were calculated which exhibit maximum at RF2 = 33 mol%. YbF3 has an important effect on the glass forming ability of fluorophosphate glasses when RF2 is over 36 mol%. The study of Raman spectra showed big differences on the glass structure between non-Yb3+ and Yb3+-doped glasses. The main building units in Yb3+-doped samples are metaphosphate groups, pyrophosphate groups (P2(O,F)7, PO3F), Al[F6] + Al[O,F]6 and F3AlOAlF3 while those of the non-Yb3+-doped glasses are monophosphate group P(O,F)4, little pyrophosphate group, Al[F4] + Al[F6] + Al[O,F]4 + Al[O,F]6 and F3AlOAlF3, which means Yb3+ ions contribute to a better glass polymerization and network uniformity.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Liyan Zhang, Lei Wen, Junjie Zhang, Lili Hu,