EPR and optical absorption investigations of photochromic effect in nearly stoichiometric LiNbO3:Fe
Contributo in Atti di convegno
Data di Pubblicazione:
2006
Citazione:
EPR and optical absorption investigations of photochromic effect in nearly stoichiometric LiNbO3:Fe / Mozzati Maria, Cristina; Badalyan, Andrei; Galinetto, Pietro; Rossella, Francesco; Azzoni Carlo, Bruno; Samoggia, Giorgio; Demaestri, G.; Bermudez, V.. - 514-516:1(2006), pp. 152-155. ( 3rd International Materials Symposium and 12th Portuguese Materials Society Meeting 2005 Aveiro, prt 20 March 2005 - 23 March 2005) [10.4028/www.scientific.net/MSF.514-516.152].
Abstract:
EPR and optical absorption measurements have been performed on nearly stoichiometric lithium niobate single crystals with iron in traces and in 0.1% molar nominal amount. Thermal treatments in reducing atmosphere allowed to obtain samples with different Fe2+/Fe3+ ratios. The Fe2+/Fe3+ dynamic has been observed by irradiating the samples with UV and visible light in the temperature range 4-300 K: the photochromic effect resulted to be more evident in the strongly reduced crystals. A simple model to explain the photochromic behavior in nearly stoichiometric LiNbO3:Fe is proposed.
Tipologia CRIS:
Relazione in Atti di Convegno
Keywords:
Electron paramagnetic resonance; Lithium niobate; Photochromic effect;
Elenco autori:
Mozzati Maria, Cristina; Badalyan, Andrei; Galinetto, Pietro; Rossella, Francesco; Azzoni Carlo, Bruno; Samoggia, Giorgio; Demaestri, G.; Bermudez, V.
Link alla scheda completa:
Titolo del libro:
3rd International Materials Symposium and 12th Portuguese Materials Society Meeting
Pubblicato in: