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Probability ofYb3+4f−4ftransitions in gadolinium gallium garnet crystals at high hydrostatic pressures
- Source :
- Physical Review B. 75
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- We show that the probability of $f\text{\ensuremath{-}}f$ radiative transitions $(^{2}F_{7∕2}\ensuremath{\leftrightarrow}^{2}F_{5∕2})$ of ${\mathrm{Yb}}^{3+}$ ions in gadolinium gallium garnet (GGG) crystals is sensitive to hydrostatic pressure application. The changes of the transition energy with pressure are very small, almost negligible. However, we observed much more pronounced variations of the transition probability, which are ascribed to a coupling between the $4{f}^{13}$ with the $4{f}^{12}5{d}^{1}$ electronic configurations and variations of the coupling coefficient with pressure. The theoretical model, explaining this behavior, assumes nonmonotonic changes of the odd-parity crystal-field terms associated with lattice distortions induced by pressure. The magnitude of these distortions correlates well with the magnitude of the distortion from the noncubic symmetry of the dodecahedral crystallographic sites in GGG host, monitored by the pressure dependence of the splitting of the $^{4}F_{3∕2}$ level of ${\mathrm{Nd}}^{3+}$ ions.
- Subjects :
- Physics
Condensed matter physics
Hydrostatic pressure
Gadolinium gallium garnet
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
law.invention
Ion
chemistry.chemical_compound
Dodecahedron
chemistry
law
Lattice (order)
Radiative transfer
Electron configuration
Hydrostatic equilibrium
Subjects
Details
- ISSN :
- 1550235X and 10980121
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........beedf3a28507f7dfb9fb9d243be4f63c
- Full Text :
- https://doi.org/10.1103/physrevb.75.174111