THE EFFECT OF IRON IONS ON THE DEFECT STRUCTURE OF LITHIUM-NIOBATE CRYSTALS GROWN FROM K2O CONTAINING MELTS

Authors
MALOVICHKO GI GRACHEV VG SCHIRMER OF
Citation
Gi. Malovichko et al., THE EFFECT OF IRON IONS ON THE DEFECT STRUCTURE OF LITHIUM-NIOBATE CRYSTALS GROWN FROM K2O CONTAINING MELTS, Solid state communications, 89(3), 1994, pp. 195-198
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
89
Issue
3
Year of publication
1994
Pages
195 - 198
Database
ISI
SICI code
0038-1098(1994)89:3<195:TEOIIO>2.0.ZU;2-D
Abstract
The most narrow ESR linewidths possible for Fe-Li(3+) in nominally pur e melts are observed in stoichiometric material obtained from growth o ut of melts containing K2O. We report that the addition of only 0.05 w t% Fe2O3 to the melt strongly increases the linewidths, pointing to a pronounced in influence of Fe on the defect structure of LiNbO3. Optic al absorption studies show that Fe-Li(2+) exists in such crystals in h igher concentrations than in conventional LiNbO3 even before reduction . This is attributed to the decreased content of intrinsic compensatin g defects, caused by K2O growth.