|Titolo:||Effect of the electron-phonon interaction on the luminescence properties of Iron ions in YAG crystal|
|Data di pubblicazione:||2009|
|Citazione:||Effect of the electron-phonon interaction on the luminescence properties of Iron ions in YAG crystal / Ricci PC; Casu A; Anedda A. - 113:50(2009), pp. 13901-13906.|
|Abstract:||High-resolution photoluminescence spectra of Fe center dot YAG crystals were recorded in the temperature range 10-150 K with different excitation energies, ranging from the band gap energy (6.88 eV) down to selective excitation of Fe(3+) ions (2.40 eV). Iron levels fine Structure is found in the zero phonon lines, whose characteristics hint at the presence of the doping Fe(3+) ion in the tetrahedral site with a dynamic Jahn-Teller effect inherent ill the (4)T(1) excited states. The analysis of the zero phonon interactions with acoustic phonons was achieved through linear and quadratic electron-phonon Coupling models, and the Huang-Rhys factor, the Debye temperature, and the electron-phonon coupling were calculated in the framework of the Debye approximation by including only the Raman two-phonon process. The interactions with lattice phonons were studied, and the results were found to be correspondent to the expected results from previous vibrational data.|
|Tipologia:||1.1 Articolo in rivista|
File in questo prodotto:
Non ci sono file associati a questo prodotto.