Abstract
The emission spectrum of Cr3+ in Y3Ga5O12 crystalline thin films at 10K is composed of the sharp R1-line, its phonon sideband, and the very weak broadband. The lineshape of R1-line at the peak wavelength of 689.8 nm cannot be fitted to a single Gaussian. This suggests that there exist several different Cr3+ sites in the thin film. This fact is confirmed by lifetime measurements; the radiative decay of the fluorescence is decomposed into multiple-exponential curves. The dominant component (2.8 ms) of the decay curve for the broadband emission is equal to those (2.4 ms) for R1-line and its phonon sidebands. This result is discussed in terms of a tunneling model.
| Original language | English |
|---|---|
| Pages (from-to) | 470-473 |
| Number of pages | 4 |
| Journal | Applied Physics A Solids and Surfaces |
| Volume | 54 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 1992 |
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Keywords
- crystalline thin films
- broadband emission
- phonon sidebands
- fluorescence decay
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EPR and optical spectroscopy of Cr3+ ions in Y3Ga5O12 crystalline thin films. / Yamaga, M.; Henderson, B.; O'Donnell, K. P.; Takeuchi, H.
In: Applied Physics A Solids and Surfaces, Vol. 54, No. 5, 01.05.1992, p. 470-473.Research output: Contribution to journal › Article
TY - JOUR
T1 - EPR and optical spectroscopy of Cr3+ ions in Y3Ga5O12 crystalline thin films
AU - Yamaga, M.
AU - Henderson, B.
AU - O'Donnell, K. P.
AU - Takeuchi, H.
PY - 1992/5/1
Y1 - 1992/5/1
N2 - The emission spectrum of Cr3+ in Y3Ga5O12 crystalline thin films at 10K is composed of the sharp R1-line, its phonon sideband, and the very weak broadband. The lineshape of R1-line at the peak wavelength of 689.8 nm cannot be fitted to a single Gaussian. This suggests that there exist several different Cr3+ sites in the thin film. This fact is confirmed by lifetime measurements; the radiative decay of the fluorescence is decomposed into multiple-exponential curves. The dominant component (2.8 ms) of the decay curve for the broadband emission is equal to those (2.4 ms) for R1-line and its phonon sidebands. This result is discussed in terms of a tunneling model.
AB - The emission spectrum of Cr3+ in Y3Ga5O12 crystalline thin films at 10K is composed of the sharp R1-line, its phonon sideband, and the very weak broadband. The lineshape of R1-line at the peak wavelength of 689.8 nm cannot be fitted to a single Gaussian. This suggests that there exist several different Cr3+ sites in the thin film. This fact is confirmed by lifetime measurements; the radiative decay of the fluorescence is decomposed into multiple-exponential curves. The dominant component (2.8 ms) of the decay curve for the broadband emission is equal to those (2.4 ms) for R1-line and its phonon sidebands. This result is discussed in terms of a tunneling model.
KW - crystalline thin films
KW - broadband emission
KW - phonon sidebands
KW - fluorescence decay
UR - http://www.scopus.com/inward/record.url?scp=0007039871&partnerID=8YFLogxK
U2 - 10.1007/BF00324174
DO - 10.1007/BF00324174
M3 - Article
AN - SCOPUS:0007039871
VL - 54
SP - 470
EP - 473
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
SN - 0947-8396
IS - 5
ER -