New results on the evolution of the emission of Nd3+ doped SrxBa1-xNb2O5 crystal during the ferroelectric phase transition are presented and compared to those previously obtained for Cr3+ and Yb3+ doped SrxBa1-xNb2O5. We have observed that Nd3+ emission is insensitive to the structural changes suffered by the crystal during the phase transition, contrary to the observations obtained for the cases of the Cr3+ and Yb3+ doped crystals. The results are interpreted in terms of the different lattice sites occupied by the optically active ions in the SrxBa1-xNb2O5 crystal.
Optical properties of active ions around the ferro-paraelectric phase transition in SBN crystals
SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni
2006-01-01
Abstract
New results on the evolution of the emission of Nd3+ doped SrxBa1-xNb2O5 crystal during the ferroelectric phase transition are presented and compared to those previously obtained for Cr3+ and Yb3+ doped SrxBa1-xNb2O5. We have observed that Nd3+ emission is insensitive to the structural changes suffered by the crystal during the phase transition, contrary to the observations obtained for the cases of the Cr3+ and Yb3+ doped crystals. The results are interpreted in terms of the different lattice sites occupied by the optically active ions in the SrxBa1-xNb2O5 crystal.
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