The lowest singlet-singlet and singlet-triplet electronic transitions of the nitrite molecular ion, responsible for the ferroelectricity of the nitrite crystal salts, have been investigated in a temperature range of 1.6-300 K. Polarized well-resolved spectra enabled dealing with separate spin substates of the excited triplet level, and for the nitrite-ion impurity incorporated in the nitrate crystals, to elucidate the effect of the symmetry correlations on the imbedding features of the impurity center. Parameters of the spin-orbit and electron-phonon interactions have been derived, and the microscopic characteristics of the crystal, mostly affecting the electron-phonon coupling, are deduced.
|Number of pages
|1 PART 7
|Published - 2006
|11th International Meeting on Ferroelectricity, IMF-11 - Iguassu Falls, Brazil
Duration: 5 Sep 2005 → 9 Sep 2005
- electron-phonon coupling