Loading…
Judd-Ofelt analysis and multiphonon relaxations of rare earth ions in fluorohafnate glasses
The optical properties of fluorohafnate glasses doped with Pr 3+, Nd 3+, Sm 3+, Dy 3+, Ho 3+, Er 3+, and Tm 3+ have been studied. From optical absorption measurements and using Judd-Ofelt theory, JO parameters Ω 2, Ω 4 , and Ω 6 have been obtained. The Ω 2 values indicate that fluorohafnate glasses...
Saved in:
Published in: | Journal of solid state chemistry 1991-02, Vol.90 (2), p.313-319 |
---|---|
Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | The optical properties of fluorohafnate glasses doped with Pr
3+, Nd
3+, Sm
3+, Dy
3+, Ho
3+, Er
3+, and Tm
3+ have been studied. From optical absorption measurements and using Judd-Ofelt theory, JO parameters
Ω
2, Ω
4
, and
Ω
6
have been obtained. The
Ω
2
values indicate that fluorohafnate glasses present a less ionic character than fluorozirconates. Multiphonon emission probabilities for several levels of Er
3+ and Ho
3+ ions were determined by the difference between the measured rates and the calculated radiative transition probabilities. The results are almost the same as those found in fluorozirconates. Multiphonon emission probabilities are in agreement with the energy-gap law followed by rare-earth ions in crystals and glasses. |
---|---|
ISSN: | 0022-4596 1095-726X |
DOI: | 10.1016/0022-4596(91)90148-B |