EPR and optical spectroscopy of Cr3+ ions in Y3Ga5O12 crystalline thin films

M. Yamaga, B. Henderson, K. P. O'Donnell, H. Takeuchi

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)470-473
Number of pages4
JournalApplied Physics A Solids and Surfaces
Volume54
Issue number5
DOIs
Publication statusPublished - 1 May 1992

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sidebands
Paramagnetic resonance
Ions
Crystalline materials
broadband
Thin films
decay
curves
thin films
spectroscopy
ions
emission spectra
Fluorescence
life (durability)
Wavelength
fluorescence
wavelengths
Optical spectroscopy

Keywords

  • crystalline thin films
  • broadband emission
  • phonon sidebands
  • fluorescence decay

Cite this

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title = "EPR and optical spectroscopy of Cr3+ ions in Y3Ga5O12 crystalline thin films",
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.",
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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 journalArticle

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

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KW - phonon sidebands

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