Abstract
We have investigated the optical properties of Cr3+ ions in an alkali gallium silicate glass system and in two glass-based nanocomposites with nucleated Β- Ga2 O3 nanocrystals. The nucleation and growth of the nanocrystalline phase in the host glass matrix were monitored by Raman scattering spectroscopy and angle-dispersive x-ray diffraction. A broadband luminescence, associated with the T24 - A24 transition from the weak crystal field of octahedral Cr3+ sites, dominated the emission of the precursor as-quenched glass. The luminescence spectra of the synthesized glass-ceramic nanocomposites revealed a crystal-like E2 - A24 strong emission and indicated that the major fraction of Cr3+ ions was located within the nanocrystalline environment. The variable-temperature studies of the nanocomposites demonstrated that the fluorescence of Cr3+ ions can be transformed from sharp R lines of the E2 - A24 transition to a combination of R lines and of the broad band of the T24 - A24 transition. We propose a simple distribution model where the major part of Cr3+ ions is located in the nanocrystalline phase of the glass-ceramic composites in the octahedral environment, substituting the gallium atoms in the Β- Ga2 O3 crystal structure. The developed nanocrystalline glass-ceramics are a promising class of Cr3+ -doped oxide glass-based optically active composite materials.
| Original language | English |
|---|---|
| Article number | 054302 |
| Journal | Journal of Applied Physics |
| Volume | 98 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2005 Sep 1 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
Cite this
Temperature effects on luminescence properties of Cr 3+ ions in alkali gallium silicate nanostructured media. / Lipinska-Kalita, Kristina E.; Krol, Denise M.; Hemley, Russell J.; Kalita, Patricia E.; Gobin, Cedric L.; Ohki, Yoshimichi.
In: Journal of Applied Physics, Vol. 98, No. 5, 054302, 01.09.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Temperature effects on luminescence properties of Cr 3+ ions in alkali gallium silicate nanostructured media
AU - Lipinska-Kalita, Kristina E.
AU - Krol, Denise M.
AU - Hemley, Russell J.
AU - Kalita, Patricia E.
AU - Gobin, Cedric L.
AU - Ohki, Yoshimichi
PY - 2005/9/1
Y1 - 2005/9/1
N2 - We have investigated the optical properties of Cr3+ ions in an alkali gallium silicate glass system and in two glass-based nanocomposites with nucleated Β- Ga2 O3 nanocrystals. The nucleation and growth of the nanocrystalline phase in the host glass matrix were monitored by Raman scattering spectroscopy and angle-dispersive x-ray diffraction. A broadband luminescence, associated with the T24 - A24 transition from the weak crystal field of octahedral Cr3+ sites, dominated the emission of the precursor as-quenched glass. The luminescence spectra of the synthesized glass-ceramic nanocomposites revealed a crystal-like E2 - A24 strong emission and indicated that the major fraction of Cr3+ ions was located within the nanocrystalline environment. The variable-temperature studies of the nanocomposites demonstrated that the fluorescence of Cr3+ ions can be transformed from sharp R lines of the E2 - A24 transition to a combination of R lines and of the broad band of the T24 - A24 transition. We propose a simple distribution model where the major part of Cr3+ ions is located in the nanocrystalline phase of the glass-ceramic composites in the octahedral environment, substituting the gallium atoms in the Β- Ga2 O3 crystal structure. The developed nanocrystalline glass-ceramics are a promising class of Cr3+ -doped oxide glass-based optically active composite materials.
AB - We have investigated the optical properties of Cr3+ ions in an alkali gallium silicate glass system and in two glass-based nanocomposites with nucleated Β- Ga2 O3 nanocrystals. The nucleation and growth of the nanocrystalline phase in the host glass matrix were monitored by Raman scattering spectroscopy and angle-dispersive x-ray diffraction. A broadband luminescence, associated with the T24 - A24 transition from the weak crystal field of octahedral Cr3+ sites, dominated the emission of the precursor as-quenched glass. The luminescence spectra of the synthesized glass-ceramic nanocomposites revealed a crystal-like E2 - A24 strong emission and indicated that the major fraction of Cr3+ ions was located within the nanocrystalline environment. The variable-temperature studies of the nanocomposites demonstrated that the fluorescence of Cr3+ ions can be transformed from sharp R lines of the E2 - A24 transition to a combination of R lines and of the broad band of the T24 - A24 transition. We propose a simple distribution model where the major part of Cr3+ ions is located in the nanocrystalline phase of the glass-ceramic composites in the octahedral environment, substituting the gallium atoms in the Β- Ga2 O3 crystal structure. The developed nanocrystalline glass-ceramics are a promising class of Cr3+ -doped oxide glass-based optically active composite materials.
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U2 - 10.1063/1.2012509
DO - 10.1063/1.2012509
M3 - Article
AN - SCOPUS:25144437080
VL - 98
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 5
M1 - 054302
ER -